1.20y(2y-x)²与5x(x-2y)平方的公因式是—— 2.分解因式(x+y)(x-y)-(x+y)²
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![1.20y(2y-x)²与5x(x-2y)平方的公因式是—— 2.分解因式(x+y)(x-y)-(x+y)²](/uploads/image/z/2001413-29-3.jpg?t=1.20y%282y-x%29%26%23178%3B%E4%B8%8E5x%28x-2y%29%E5%B9%B3%E6%96%B9%E7%9A%84%E5%85%AC%E5%9B%A0%E5%BC%8F%E6%98%AF%E2%80%94%E2%80%94+2.%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%28x%2By%29%28x-y%29-%28x%2By%29%26%23178%3B)
1.20y(2y-x)²与5x(x-2y)平方的公因式是—— 2.分解因式(x+y)(x-y)-(x+y)²
1.20y(2y-x)²与5x(x-2y)平方的公因式是—— 2.分解因式(x+y)(x-y)-(x+y)²
1.20y(2y-x)²与5x(x-2y)平方的公因式是—— 2.分解因式(x+y)(x-y)-(x+y)²
20y(2y-x)²=20y(x-2y)²、5x(x-2y)²
公因式:5(x-2y)²
(x+y)(x-y)-(x+y)²=(x+y)(x-y-x-y)=(x+y)(-2y)=-2y(x+y)