Question

十字相乘法 求解

m²+7m-30 x²-4x-21 x²+4xy-12y² x²-xy-2y² (x-4)²-6(x-4)+5 x的4次方+6x²+8
x的4次方-5x²+4 2x²+15x+7 3x²-8x+4 5x²+7x-6 x²+x-(a²-a) 3乘x的3次方-10x²+3x (2x-3)²+3(2x-3)+2 6x²-7x-6 5x²-3x-2 2x²+7x+3

速度求解

Answer 1

(m-3)(m+10) (x-7)(x+3) (x+6y)(x-2y) (x-2y)(x+y) (x-9)(x-5) (x²+2)(x²+4)
(x-2)(x+2)(x-1)(x+1) (2x+1)(x+7) (3x-2)(x-2) (5x-3)(x+2) (x+a)(x+1-a) x(3x-1)(x-3)
(2x-2)(2x-1) ()() (x+1)(5x-2) (2x+1)(x+3)

Answer 2

图片提交不了
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