有关因式分解的题!2、6x²-7xy+2y²; x²+144y²-25xy; 6x²-13x+6; 2x²-56x²-7xy+2y²; x²+144y²-25xy; 6x²-13x+6; 2x²-5x+3; 2x²+7x+3 -x²-x-56 12x²-11那-x²-x+56因式分解是什么?还有12x²-11x-15; 5x²-4x-1; 6x²-13x+6;6x²-13x-15; -6x²+12-x;

问题描述:

有关因式分解的题!2、6x²-7xy+2y²; x²+144y²-25xy; 6x²-13x+6; 2x²-5
6x²-7xy+2y²; x²+144y²-25xy; 6x²-13x+6; 2x²-5x+3; 2x²+7x+3 -x²-x-56 12x²-11
那-x²-x+56因式分解是什么?还有12x²-11x-15; 5x²-4x-1; 6x²-13x+6;6x²-13x-15; -6x²+12-x;

6x²-7xy+2y²=(2x-y)(3x-2y)
x²+144y²-25xy=(x-9y)(x-16y)
6x²-13x+6=(2x-3y)(3x-2y)
2x²-5x+3=(x-1)(2x-3)
2x²+7x+3=(2x+1)(x+3)
-x²-x-56这个错的,应该是x²-x-56=(x-8)(x+7)
12x²-11xy-15y²=(3x-5y)(4x+3y)

6x²-7xy+2y²=(2x-y)(3x-2y)
x²+144y²-25xy=
6x²-13x+6=(2x-3)(3x-2)
2x²-5x+3=(2x-3)(x-1)
2x²+7x+3=(2x+1)(x+3)
x²-x-56 =(x+7)(x-8)

6x²-7xy+2y²; =(2x-y)(3x-2y)x²+144y²-25xy; =x^2-25xy+144y^2=(x-9y)(x-16y)6x²-13x+6; =(2x-3)(3x-2)2x²-5x+3; =(x-1)(2x-3)2x²+7x+3 =(x+3)(2x+1)-x²-x-56 =-(x^2+x+...

6x²-7xy+2y²=(2x-1)(3x-2);
x²+144y²-25xy=(x-16y)+(x-9y);
6x²-13x+6=(2x-3)(3x-2);
2x²-5x+3=(2x-3)(x-1);
2x²+7x+3=(2x+1)(x+3)
-x²-x-56 无解
12x²-11xy-15y²=(3x-5y)(4x+3y)