Trắc nghiệm Nhân đơn thức với đa thức Toán Lớp 8

A. 3

B. 2

C. 1

D. 0

A. 10x2y + 4xy

B. 7x2y – 4xy

C. 10x2y - 4xy

D. -10x2y - 4xy

A. \(14 x y-4 x^{2} y+40 x y^{2} \)

B. \(3x y- x^{2} y+ x y^{2} \)

C. \(- x y+51 x^{2} y+40 x y^{2} \)

D. \(14 x y-4 x^{2} y+12x y^{2} \)

A. \(-\frac{1}{5} x^{5}+x^{4}-2x^{3}\)

B. \(- x^{5}+x^{4}-\frac{7}{5} x^{3}\)

C. \(-\frac{1}{5} x^{5}-\frac{7}{5} x^{3}\)

D. \(-\frac{1}{5} x^{5}+x^{4}-\frac{7}{5} x^{3}\)

A. \(2 x y-\frac{5}{3} x^{2} y^{2} \cdot \)

B. \(5 x y-\frac{1}{3} x^{2} y^{2} \cdot \)

C. \(5 x y-\frac{4}{3} x^{2} y^{2} \cdot \)

D. \( x y-\frac{4}{3} x^{2} y^{2} \cdot \)

A. \(-x^{2} y^{4}+3 x y^{3} \)

B. \(-\frac{4}{9} x^{2} y^{4}+3 x y^{3} \)

C. \(-\frac{4}{9} x^{2} y^{4}+2 x y^{3} \)

D. \(-\frac{4}{9} x^{2} y^{4}+ x y^{3} \)

A. \(-3x y^{2}-2 x^{3} y \cdot \)

B. \(-2x y^{2}- x^{3} y \cdot \)

C. \(-x y^{2}-2 x^{3} y +3xy\)

D. \(-x y^{2}-2 x^{3} y \cdot \)

A. \(4 x^{2} y^{2}-3 x^{3} y \)

B. \(-12 x^{2} y^{2}+112 x^{3} y \)

C. \(45 x^{2} y^{2}- x^{3} y \)

D. \(45 x^{2} y^{2}+243 x^{3} y \)

A. \(14 x y-4 x^{2} y+40 x y^{2} \)

B. \(11 x y-12 x^{2} y+4 x y^{2} \)

C. \( x y-4 x^{2} y+11 x y^{2} \)

D. \(5 x -4 x^{2} y+4 x y^{2} \)

A. \(-2 a^{2}+\frac{7}{2} a b .\)

B. \(2 a^{2}-\frac{7}{2} a b .\)

C. \(2 a^{3}-\frac{7}{2} a b .\)

D. \(2 a^{2}+\frac{7}{2} a b .\)

A. \(-5 a^{2} b-6 a b^{2} . \)

B. \(-3 a^{2} b+ a b^{2} . \)

C. \(-12 a^{2} b+ a b^{2} . \)

D. \(-6 a^{2} b+9 a b^{2} . \)

A. \(-3 a^{3} b^{5}-5 a^{2} b^{4} \)

B. \(-4 a^{3} b^{5}+ a^{2} b^{4} \)

C. \(-4 a^{3} b^{5}+4 a^{2} b^{4} \)

D. \(-4 a^{3} b^{5}+5 a^{2} b^{4} \)

A. \(15 a^{3} b^{2}+15 a b^{3} \)

B. \(-3a^{3} b^{2}+15 a b^{3} \)

C. \(5 a^{3} b^{2}+15 a b^{3} \)

D. \(16 a^{3} b^{2}+16 a b^{3} \)

A. \( 29x^{3} y^{4}+\frac{5}{3} x^{2} y^{4}+\frac{5}{3} x y^{3} \cdot \)

B. \(15x^{3} y^{4}+\frac{2}{3} x^{2} y^{4}+\frac{5}{3} x y^{3} \cdot \)

C. \(6 x^{3} y^{4}+\frac{2}{3} x^{2} y^{4}+\frac{2}{3} x y^{3} \cdot \)

D. \( x^{2} y^{3}+\frac{2}{3} x^{} y^{3}+\frac{2}{3} x y^{3} \cdot \)

A. \(\frac{7}{3} x^{3}-49 x^{2} \)

B. \(\frac{11}{3} x^{3}-49 x^{2} \)

C. \(\frac{13}{3} x^{3}-14 x^{2} \)

D. \(- x^{3}-49 x^{2} \)

A. \(\frac{-11}{7} x^{3} y+\frac{5}{7} x y^{2} \)

B. \(- x^{3} y+\frac{1}{7} x y^{2} \)

C. \(\frac{-12}{7} x^{3} y+\frac{1}{7} x y^{2} \)

D. \(\frac{-4}{7} x^{3} y+\frac{5}{7} x y^{2} \)

A. \(\frac{13}{2} x^{2} y^{3}+\frac{13}{2} x y^{3}\)

B. \(\frac{3}{2} x^{2} y^{3}+\frac{13}{2} x y^{3}\)

C. \(\frac{13}{2} x^{} y^{2}+\frac{13}{2} x y^{3}\)

D. \(-x^{2} y^{3}+\frac{5}{2} x y^{3}\)

A. \(-x^{3} y-3 x y^{2} \)

B. \(6 x^{3} y-3 x y^{2} +1\)

C. \(6 x^{3} y-3 x y^{2} \)

D. \(-3 x^{3} y-2 x y^{2} \)

A. \( x^{4} y^{5}-\frac{11}{2} x^{4} y^{6} . \)

B. \(6 x^{4} y^{5}-\frac{3}{2} x^{4} y^{6} . \)

C. \(6 x^{4} y^{5}-\frac{11}{2} x^{4} y^{6} . \)

D. \(3x^{2} y^{5}- x^{4} y^{6} . \)

A. \(- x^{2} y^{3}+5 x^{3} y^{2} 2 \)

B. \(-3 x^{3} y^{4}+2 x^{3} y^{2} 2 \)

C. \(-10 x^{3} y^{4}+5 x^{3} y^{2} 2 \)

D. \(-5 x^{3} y^{4}+ x^{3} y^{2} 2 \)

A. \(\frac{3}{5} x^{4} y^{2} z+2 x^{4} y^{2} \)

B. \(\frac{-1}{5} x^{3} y^{} z+2 x^{4} y^{2} \)

C. \(\frac{3}{5} x^{3} y^{} z\)

D. \(\frac{3}{5} x^{4} y^{2} z-3 x^{4} y^{2} \)

A. \(2 x^{2} y^{3}+5 x^{4} y^{2} \)

B. \(-12 x^{} y^{2}-8 x^{3} y^{} \)

C. \(-12 x^{2} y^{3}+5 x^{4} y^{2} \)

D. \(-12 x^{2} y^{3}-8 x^{4} y^{2} \)

A. \( x^{2} y+63 x^{3} y .\)

B. \(-9 x^{2} y+16 x^{3} y .\)

C. \(-14 x^{2} y+63 x^{3} y .\)

D. \(-14 x^{2} y+3 x^{3} y .\)

A. \(-\frac{5}{2} x^{3} y-\frac{1}{2} x^{2} y . \)

B. \(-\frac{3}{2} x^{3} y-\frac{3}{2} x^{2} y . \)

C. \(-\frac{1}{2} x^{3} y- x^{2} y . \)

D. \(-\frac{1}{2} x^{3} y-\frac{3}{2} x^{2} y . \)

A. \(-\frac{1}{5} x^{2} y^{2}+\frac{3}{5} x^{3} \cdot y^{4} \)

B. \(-\frac{2}{5} x^{2} y^{2}+\frac{6}{5} x^{3} \cdot y^{4} \)

C. \(-\frac{2}{3} x^{2} y^{2}+x^{3} \cdot y^{4} \)

D. \(- x^{2} y^{2}+\frac{6}{5} x^{3} \cdot y^{4} \)

A. \( x^{4} y^{2}+\frac{3}{5} x^{2} y^{7} \)

B. \(\frac{4}{5} x^{4} y^{2}+ x^{2} y^{7} \)

C. \(\frac{1}{5} x^{4} y^{2}+\frac{4}{5} x^{2} y^{7} \)

D. \(\frac{4}{5} x^{4} y^{2}+\frac{9}{5} x^{2} y^{7} \)

A. \(-3 x^{2} y+ x^{3} y^{2}-\frac{7}{3} x y .\)

B. \(-21 x^{2} y+11 x^{3} y^{2}-\frac{5}{3} x y .\)

C. \(-11 x^{2} y+12 x^{3} y^{2}-\frac{7}{3} x y .\)

D. \(-21 x^{2} y+28 x^{3} y^{2}-\frac{7}{3} x y .\)

A. \(- x^{4} y z+5 x^{3} y z \)

B. \(-3 x^{4} y z+5 x^{3} y z \)

C. \(-4 x^{4} y z+8 x^{3} y z \)

D. \(- x^{4} y z+11 x^{3} y z \)

A. \(\frac{2}{7} x^{2} y^{2}-\frac{7}{5} x y^{3} \)

B. \(\frac{4}{45} x^{2} y^{2}-\frac{7}{5} x y^{3} \)

C. \(\frac{4}{3} x^{2} y^{2}-\frac{1}{5} x y^{3} \)

D. \(\frac{4}{3} x^{2} y^{2}-\frac{7}{5} x y^{3} \)

A. \(\frac{1}{2} x^{2} y-6 x\)

B. \(\frac{1}{2} x^{2} y- x\)

C. \(-x^{2} y-6 x\)

D. \(\frac{3}{2} x^{2} y-6 x\)

A. \(\frac{1}{15} x^{4} y^{7}-\frac{3}{2} x^{4} y^{6} \)

B. \(\frac{1}{3} x^{4} y^{7}-\frac{21}{2} x^{4} y^{6} \)

C. \(\frac{1}{5} x^{4} y^{7}-\frac{1}{2} x^{4} y^{6} \)

D. \(\frac{1}{15} x^{4} y^{7}-\frac{2}{21} x^{4} y^{6} \)

A. \(\frac{2}{7} x^{6} y^{3}+\frac{1}{7} x^{5} y^{4}\)

B. \(\frac{2}{7} x^{6} y^{3}+\frac{1}{7} x^{5} y^{4}-\frac{3}{4} x^{4} y^{3} . \)

C. \(9 x^{6} y^{3}+\frac{1}{7} x^{5} y^{4}-\frac{3}{4} x^{4} y^{3} . \)

D. \(\frac{2}{7} x^{6} y^{3}+2x^{5} y^{4}-\frac{3}{4} x^{4} y^{3} . \)

A. \(-\frac{14}{3} x^{2} y+\frac{4}{3} x y^{2} \)

B. \(-\frac{4}{3} x^{2} y+\frac{4}{3} x y^{2} \)

C. \(-\frac{14}{3} x^{2} y-\frac{11}{3} x y^{2} \)

D. \(- x^{2} y+\frac{4}{3} x y^{2} \)

A. \(5 x^{5} y^{5}-9 x^{3} y^{6} \)

B. \(5 x^{5} y^{5}+2 x^{3} y^{6} \)

C. \(5 x^{5} y^{5}-20 x^{3} y^{6} \)

D. \(-x^{5} y^{5}-5 x^{3} y^{6} \)

A. \(-14 x^{6} y^{2}+28 x^{2} y^{2} \)

B. \(-x^{6} y^{2}+28 x^{2} y^{2} \)

C. \(-5 x^{6} y^{2}+8 x^{2} y^{2} \)

D. \(-14 x^{6} y^{2}-4 x^{2} y^{2} \)

A. \(10 x^{3}+12 x^{2} y \)

B. \(10 x^{3}-4 x^{2} y \)

C. \(5 x^{3}+6 x^{2} y \)

D. \(10 x^{3}+6 x^{2} y \)

A. \(-\frac{1}{3} x^{3} y^{5}\)

B. \(-\frac{4}{3} x^{3} y^{4}+\frac{2}{3} x^{2} y^{2}\)

C. \(-\frac{1}{3} x^{3} y^{4}\)

D. \(-\frac{1}{3} x^{3} y^{4}-\frac{2}{3} x^{2} y^{2}\)

A. \(\frac{4}{3} x^{2} y^{2}-\frac{1}{3} x^{4} y z \)

B. \(- x^{2} y^{2}-\frac{2}{3} x^{4} y z \)

C. \(\frac{4}{3} x^{2} y^{2}-\frac{2}{3} x^{4} y z \)

D. \(\frac{1}{3} x^{2} y^{2}-\frac{2}{3} x^{4} y z \)

A. \(-x^{3} y+11 x^{2} y^{3} \)

B. \(\frac{1}{3} x^{3} y+21 x^{2} y^{3} \)

C. \(\frac{8}{5} x^{3} y+11 x^{2} y^{3} \)

D. \(\frac{8}{5} x^{3} y+21 x^{2} y^{3} \)

A. \(-\frac{4}{5} x^{4} y^{3}-\frac{9}{5} x^{3} y \)

B. \(-\frac{1}{5} x^{4} y^{3}+\frac{9}{5} x^{3} y \)

C. \(-\frac{4}{5} x^{4} y^{3}+\frac{2}{5} x^{3} y \)

D. \(- x^{4} y^{3}-\frac{9}{5} x^{3} y \)

A. \(3 x^{4}-10 x^{3} \)

B. \( x^{4}+5 x^{3} \)

C. \(x^{4}- x^{2} \)

D. \(3 x^{4}+5 x^{3} \)

A. \(12 x^{2}-15 x y +1\)

B. \(12 x^{2}-15 x y .\)

C. \( x^{2}-5 x y .\)

D. \(3 x^{2}- x y .\)

A. \(-11 x^{2} y+2 x^{3} \)

B. \(-11 x^{2} y-45 x^{3} \)

C. \(-63 x^{2} y-45 x^{2} \)

D. \(-63 x^{2} y-45 x^{3} \)

A. \(6 x^{3} y^{4}- x^{4} y^{5} \cdot \)

B. \(2 x^{3} y^{4}-2 x^{4} y^{5} \cdot \)

C. \( x^{3} y^{4}- x^{4} y^{5} \cdot \)

D. \(6 x^{3} y^{4}-2 x^{4} y^{5} \cdot \)

A. \(-2x^{5} y^{3}+14 x^{4} y^{4} \)

B. \(2 x^{5} y^{3}+14 x^{4} y^{4} \)

C. \(4 x^{5} y^{3}+9 x^{4} y^{4} \)

D. \(2 x^{5} y^{3}+8 x^{4} y^{4} \)

A. \(12 x^{2} y-\frac{1}{7} x \)

B. \(x^{2} y-\frac{9}{7} x \)

C. \(3x^{2} y-\frac{9}{7} x \)

D. \(6 x^{2} y-\frac{9}{7} x \)

A. \( x^{3} y^{3}-\frac{1}{2} x^{2} y^{4} \cdot \)

B. \(-\frac{11}{2} x^{3} y^{3}-\frac{1}{2} x^{2} y^{4} \cdot \)

C. \(-\frac{1}{2} x^{3} y^{3}-\frac{1}{2} x^{2} y^{4} \cdot \)

D. \(-\frac{3}{2} x^{3} y^{3}-\frac{1}{2} x^{2} y^{4} \cdot \)

A. \(x^{2} y-3 x y\)

B. \(2 x^{2} y-3 x y\)

C. \(-3 x y\)

D. \(11x^{2} y-3 x y\)

A. \(-y^{3}+2 y^{2} \)

B. \(y^{3}+2 y^{2} \)

C. \(\frac{11}{9} y^{3}+2 y^{2} \)

D. \(\frac{2}{9} y^{3}+2 y^{2} \)

A. \(-\frac{1}{5} y^{4}-4 y^{3} \)

B. \(-2 y^{4}-4 y^{3} \)

C. \(-\frac{8}{5} y^{4}-y^{3} \)

D. \(-\frac{8}{5} y^{4}-4 y^{3} \)