简单分解因式过程

1.-8x^4-16x^3y
=-8x^3(x+2y)

2.12xyz-9y^2z^2
=3yz(4x-3yz)

都是用提取公因式法:

-8x^4-16x^3y=-8x³(x+2y)

12xyz-9y^2z^2=3yz(4x-3yz)

请参考:
http://zhidao.baidu.com/question/23424717.html?si=8&wtp=wk

1.
-8x^4-16x^3y
=-8x^3(x+2y)

2.
12xyz-9y^2z^2
=3yz(4x-3yz)

1.-8x^4-16x^3y
=-8x^3(x-2y)
2.12xyz-9y^2z^2
=3yz(4x-3yz)

-8x^4-16x^3y
=-8x³(x+2y)
12xyz-9y^2z^2
=3yz(4x-3yz)

1.-8x^4-16x^3y =-8x^3(x+2y)
2.12xyz-9y^2z^2=3yz(4x-3yz)