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. $-\frac{8}{5} y^{4}-4 y^{3}$