Question

分解因式 ①15x(a-b)的2次方-3y(b-a) ； ②(y+1)(y的2次方减1）；减(y+1)的3次方 ③ x(

Answer 1

①15x(a-b)²-3y(b-a)=3(5xa-5xb+y)(a-b)

②(y+1)(y²-1)-(y+1)³=-2(y+1)²

③ x(a-b)+y(b+a)-z(a-b)=xa-bx+yb+ya-za+zb无法分解

④(a-3)²-(2a-6)=(a-5)(a-3)

⑤(a+3)³-3(a+3)²=a(a+3)²

⑥-m²n(x-y)的n次方+mn²(x-y)的n+1次方=-mn(m-nx+ny)(x-y)的n次方