有关因式分解的题!2、6x²-7xy+2y²; x²+144y²-25xy; 6x²-13x+6; 2x²-5
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;
答
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+...