Question

因式分解 ①3(y-x)²+2(x-y)

Answer 1

3(y-x)²+2(x-y)=3(x-y)²+2(x-y)=(x-y)[3(x-y)+2]=(x-y)(3x-3y+2)

4a(x-2)²-2b(2-x)³=4a(x-2)²+2b(x-2)³=2(x-2)²[2a+b(x-2)]=(x-2)²(2a+bx-2b)

6x³y（x-y）³...