(a-b)的三次方-(b-a)的二次方
3m(x-y)的二次方-n(y-x)
(2x-3y)(a+b)+(3x-2y)(a+b)
2(a-3)的二次方-a+3
- 苏州马小云
-
(a-b)的三次方-(b-a)的二次方
=(a-b)^3-(a-b)^2
=(a-b)^2(a-b-1)
3m(x-y)的二次方-n(y-x)
=3m(x-y)^2+n(x-y)
=(x-y)[3m(x-y)+n]
=(x-y)(3mx-3my+n)
(2x-3y)(a+b)+(3x-2y)(a+b)
=(a+b)(2x-3y+3x-2y)
=(a+b)(5x-5y)
=5(a+b)(x-y)
2(a-3)的二次方-a+3
=2(a-3)^2-(a-3)
=(a-3)[2(a-3)-1]
=(a-3)(2a-6-1)
=(a-3)(2a-7)
不懂可追问
满意请采纳
谢谢
- 真可
-
(a-b)的三次方-(b-a)的二次方
=(a-b)^2(a-b-1)