Trắc nghiệm Phân tích đa thức thành nhân tử Toán Lớp 8

A. (x – 1)(x + 1)

B. (x + 1)(x +1)

C. (- x – 1)(x +1)

D. x(x – 1)

A. \( \left( {x + 2} \right)\left( {{x^2} + 2x + 4} \right)\)

B. \( x\left( {x + 2} \right)\left( {{x^2} + 2x + 4} \right)\)

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

D. \( x\left( {x - 2} \right)\left( {{x^2} + 2x + 4} \right)\)

A. x(x+2)

B. x(x-2)

C. x+2

D. x-2

A. \(2(x+4−y)(x+4+y).\)

B. \(2(x+4+y)(x+4+y).\)

C. \(2(x+4−y)(x-4+y).\)

D. \(2(x-4−y)(x+4+y).\)

A. \((x+4)(x+2y−4)\)

B. \((x+2y+4)(x-2y−4)\)

C. \((2y+4)(x+2y−4)\)

D. \((x+2y+4)(x+2y−4)\)

A. \((x +2)(x - y)\)

B. \((x - 2)(x + y)\)

C. \((2-x)(x - y)\)

D. \((x - 2)(x - y)\)

A. \(x(x+y)\)

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

C. \((x-1)(x+y)\)

D. \(y{(x + 1)^2}\)

A. x(x+3)(x−2)

B. x(x−3)(x−2)

C. x(x+3)(x+2)

D. x(x−3)(x+2)

A. (4+x+y)(4−x−y)

B. (4+x+y)(4+x−y)

C. (4−x+y)(4+x−y)

D. (4−x−y)(4−x+y)       

A. (x+y)(x−y−9)

B. (x−y)(x+y−9)

C. (x+y)(x+y+9)

D. (x−y)(x+y+9)           

A. −16x−8

B. −18x+6

C. −16x+8

D. −18x+7

A. \(( x − 3 y + z ) ( x − 3 y − z )\)

B. \(( 5 x − 3 y + 2 z ) ( x − 3 y − 2 z )\)

C. \(( 2 x − 3 y + 2 z ) ( x − 3 y − 2 z )\)

D. \(( x − 3 y + 2 z ) ( x − 3 y − 2 z )\)

A. (y+3)(x−2)

B. (y−3)(x−2)

C. (y−3)(x+2)

D. (y−2)(x−3)

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

B. \(5{x^2}{y^2}( {1 - 5xy + 2x})\)

C. \(3{x^2}{y^3}( {1 - 5xy + 2x})\)

D. \(5{x^2}{y^3}( {1 - 5xy - 2x})\)

A. A=(x−1)(x−6)

B. A=(x+1)(x−6)

C. A=(x−1)(x+6)

D. A=(x+1)(x+6)

A. \(x=3\)

B. \(x=1 \text { hay } x=5\)

C. x=-1

D. \(x=2 \text { hay } x=5\)

A. x=1

B. x=5

C. x=2

D. x=7

A. \((2x+1-y)(x+1+y)\)

B. \((x+1-y)(x+1+y)\)

C. \((x+1)(x+1+y)\)

D. \((x-y)(x+y)\)

A. \((x+4) \cdot(3 x-5)\)

B. \((x-1) \cdot(3 x-5)\)

C. \(x(x+4) \cdot( x-5)\)

D. \((x+4) \cdot( x-5)\)

A. \(\left(x^{2}+2\right)(x-3)(x+3)\)

B. \(\left(x^{2}+5\right)(x-3)(x+3)\)

C. \(\left(x^{2}+5\right)(x-3)\)

D. \(x\left(x^{2}+5\right)(x-3)(x+3)\)

A. \(3 a b(2 b-a)\)

B. \(-4 a b(2 b-a)\)

C. \(a b(2 b-a)\)

D. \(4 a b(2 b+a)\)

A. \(-( x+1)(x+1)\)

B. \(-(2 x+1)(x+1)\)

C. \((2 x+1)(x+1)\)

D. \(-(2 x+1)(x-1)\)

A. \((b-a)(3 b-a)(a+b)\)

B. \((b-a)(3 b-a)\)

C. \(2(b-a)(3 b-a)\)

D. \((b+a)(3 b-a)\)

A. \(-(b-a)(b-a)(x+5)\left(x^{2}-5 x+25\right)\)

B. \((b+a)(b-a)(x+5)\left(x^{2}-5 x+25\right)\)

C. \((b-a)(b-a)(x+5)\left(x^{2}-5 x+25\right)\)

D. \((b-a)(x+5)\left(x^{2}-5 x+25\right)\)

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

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

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

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

A. \(\left(x^{3}-4 x\right)\left(x^{6}+3 x^{4}+16 x^{2}\right)\)

B. \(\left(x^{3}- x\right)\left(x^{6}+4 x^{4}+16 x^{2}\right)\)

C. \(x\left(x^{3}-4 x\right)\left(x^{6}+4 x^{4}+16 x^{2}\right)\)

D. \(\left(x^{3}-4 x\right)\left(x^{6}+4 x^{4}+16 x^{2}\right)\)

A. \(2x\left(2 x-4 y^{2}\right)\left(4 x^{2}+8 x y^{2}+16 y^{4}\right)\)

B. \(\left(2 x-4 y^{2}\right)\left(4 x^{2}+8 x y^{2}\right)\)

C. \(\left(2 x-4 y^{2}\right)\left(4 x^{2}+8 x y^{2}+16 y^{4}\right)\)

D. \(\left( x-3 y^{2}\right)\left(4 x^{2}+8 x y^{2}+16 y^{4}\right)\)

A. \(\left( a^{3}-5 b^{2}\right)\left(9 a^{6}+15 a^{3} b^{2}+25 b^{4}\right)\)

B. \(\left(3 a^{3}-5 b^{2}\right)\left(9 a^{6}+15 a^{3} b^{2}+25 b^{4}\right)\)

C. \(\left(3 a^{3}-5 b^{2}\right)\left(9 a^{6}+18 a^{3} b^{2}+25 b^{4}\right)\)

D. \(\left(3 a^{3}-5 b^{2}\right)\left(9 a^{6}+3 a^{3} b^{2}+25 b^{4}\right)\)

A. \((x-2)(x-8)\)

B. \((x+2)(x-8)\)

C. \(2x(x+2)(x-8)\)

D. \(x^2(x+2)(x-8)\)

A. \((x-y+5)(x-y-2)\)

B. \((x-y+2)(x-y-2)\)

C. \(x(x-y+5)(x-y-2)\)

D. \(2(x-y+5)(x-y-2)\)

A. \((x-y+2)(x-y-2)\)

B. \((x-y+6)(x-y-2)\)

C. \((x-y)(x-y-2)\)

D. \((x+y+6)(x-y-2)\)

A. \(\left(a^{2}+1\right)\left(a^{4}+1\right)\)

B. \((a+1)\left(a^{2}+1\right)\left(a^{4}+1\right)\)

C. \((3a-1)\left(a^{2}+1\right)\left(a^{4}+1\right)\)

D. \((a-1)(a+1)\left(a^{2}+1\right)\left(a^{4}+1\right)\)

A. \(2(a+b)(3 a-5 b)\)

B. \((a+b)(3 a-5 b)\)

C. \((a+2b)(3 a-5 b)\)

D. \((a-b)(3 a-5 b)\)

A. x=0;x=3

B. x=3

C. x=0

D. x=-1;x=3

A. (a+b+c)(a+b-c)

B. \(2(a+b+c)(a+b-c)\)

C. \(-3(a+b+c)(a+b-c)\)

D. \((ab+c)(ab-c)\)

A. \((b+c-a)(b+c+a)\)

B. \((a-b+c)(a+b-c)\)

C. \(-3(a-b+c)(a+b-c)(b+c-a)(b+c+a)\)

D. \((a-b+c)(a+b-c)(b+c-a)(b+c+a)\)

A. \((7-ab)(7+ab)\)

B. \((7-a+b)(7+a-b)\)

C. \((7-2a+b)(7+2a-b)\)

D. \((ab-7)(7+a-b)\)

A. \((x-y-2 x y)(x+y+2 x y)\)

B. \((x-2 x y)(x+2 x y)\)

C. \((x+y-2 x y)(x+y+2 x y)\)

D. \(2(x+y-2 x y)(x+y+2 x y)\)

A. \(a^{m} b(a-\sqrt{3})(a+\sqrt{3})\left(m \in \mathbb{N}^{*}\right) .\)

B. \(15 a^{m} b(a-\sqrt{3})(a+\sqrt{3})\left(m \in \mathbb{N}^{*}\right) .\)

C. \(15 a^{m} b(2a-\sqrt{3})(2a+\sqrt{3})\left(m \in \mathbb{N}^{*}\right) .\)

D. \(3 a^{m} b(a-\sqrt{3})(a+\sqrt{3})\left(m \in \mathbb{N}^{*}\right) .\)

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

B. \(2(x-y)\left(25 x^{2}-4 y^{2}\right)\)

C. \((x-y)^{2}\left(25 x^{2}-4 y^{2}\right)\)

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

A. \((a- b)^{2}(3 x-\sqrt{2})(3 x+\sqrt{2})\)

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

C. \((a-2 b)(3 x-\sqrt{2})(3 x+\sqrt{2})\)

D. \((a- b)^{2}( x-\sqrt{2})(3 x+\sqrt{2})\)

A. \((a-b)(x-\sqrt{2})(x+\sqrt{2})\)

B. \((x-\sqrt{2})(x+\sqrt{2})\)

C. \((2a-b)(x-\sqrt{2})(x+\sqrt{2})\)

D. \((a-2b)(x-\sqrt{2})(x+\sqrt{2})\)

A. \((x-2y)(2 x-3 y)(2 x+3 y)\)

B. \((x-y)(2 x-3 y)(2 x+3 y)\)

C. \((x-y)(2 x-3 y)\)

D. \((x-y)(2 x- y)(2 x+3 y)\)

A. \((x-\sqrt{3} y)(x+\sqrt{3} y)\)

B. \((m+n)(x-3 y)(x+3 y)\)

C. \((m+n)(x-\sqrt{3} y)(x+\sqrt{3} y)\)

D. \((m-n)(x-\sqrt{3} y)(x+\sqrt{3} y)\)

A. \(4 x\left(x^{2}+6 x-3 y^{2}\right)\)

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

C. \((4 x-1)\left(x^{2}+6 x-3 y^{2}\right)\)

D. \(4 x^3\left(x^{2}+6 x-3 y^{2}\right)\)

A. \(x y z\left(2x-x^{2} y^{2}+z\right)\)

B. \(x y z\left(x-x^{2} y^{2}+z\right)\)

C. \(x y z^2\left(x-x^{2} y^{2}+z\right)\)

D. \(x y z\left(x-x^{2} y^{2}z^2+z\right)\)

A. \( 5\left( {x + y + 2z} \right)\left( {x - y - 2z} \right) \)

B. \( 5\left( {x - y + 2z} \right)\left( {x - y - 2z} \right) \)

C. \( 5\left( {x - y- 2z} \right)\left( {x - y - 2z} \right) \)

D. \( 5\left( {x - y + 2z} \right)\left( {x + y - 2z} \right) \)

A. \( \left( {x + y} \right)\left( {x + y + 1} \right)\left( {x - y - 1} \right)\)

B. \( \left( {x + y} \right)\left( {x + y + 1} \right)\left( {x + y - 1} \right)\)

C. \( \left( {x - y} \right)\left( {x + y + 1} \right)\left( {x + y - 1} \right)\)

D. \( \left( {x + y} \right)\left( {x - y + 1} \right)\left( {x + y - 1} \right)\)

A. \({x}{\left( {x + 1} \right)^2}\)

B. \({x^2}{\left( {x + 1} \right)^2}\)

C. \({x^2}{\left( {x - 1} \right)^2}\)

D. \({x^2}{\left( {x + 1} \right)}\)

A. \( \left( {2 +3x} \right)\left( {2x - 1} \right)\)

B. \( \left( {2 - 3x} \right)\left( {2x - 1} \right)\)

C. \( \left( {2 +3x} \right)\left( {2x + 1} \right)\)

D. \( \left( {2 +3x} \right)\left( {2x - 1} \right)\)