1,b(a-b)²-(a-b)³2,a²(x-y)²+2a(x-y)³3,(x-2)²-y(2-x)²4,5(x-y)³+10(y-x)²5,10a(x-y)³-5b(y-x)²
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/10 01:24:00
![1,b(a-b)²-(a-b)³2,a²(x-y)²+2a(x-y)³3,(x-2)²-y(2-x)²4,5(x-y)³+10(y-x)²5,10a(x-y)³-5b(y-x)²](/uploads/image/z/14603696-8-6.jpg?t=1%2Cb%28a-b%29%26%23178%3B-%28a-b%29%26%23179%3B2%2Ca%26%23178%3B%28x-y%29%26%23178%3B%2B2a%28x-y%29%26%23179%3B3%2C%28x-2%29%26%23178%3B-y%282-x%29%26%23178%3B4%2C5%28x-y%29%26%23179%3B%2B10%28y-x%29%26%23178%3B5%2C10a%28x-y%29%26%23179%3B-5b%28y-x%29%26%23178%3B)
1,b(a-b)²-(a-b)³2,a²(x-y)²+2a(x-y)³3,(x-2)²-y(2-x)²4,5(x-y)³+10(y-x)²5,10a(x-y)³-5b(y-x)²
1,b(a-b)²-(a-b)³
2,a²(x-y)²+2a(x-y)³
3,(x-2)²-y(2-x)²
4,5(x-y)³+10(y-x)²
5,10a(x-y)³-5b(y-x)²
1,b(a-b)²-(a-b)³2,a²(x-y)²+2a(x-y)³3,(x-2)²-y(2-x)²4,5(x-y)³+10(y-x)²5,10a(x-y)³-5b(y-x)²
1,b(a-b)²-(a-b)³=(a-b)²(2b-a)
2,a²(x-y)²+2a(x-y)³=(x-y)²(a^2+2ax-2ay)
3,(x-2)²-y(2-x)²=(x-2)²(1-y)
4,5(x-y)³+10(y-x)²=5(x-y)^2(x-y-2)
5,10a(x-y)³-5b(y-x)²=5(x-y)^2(ax-12ay-b)
肯定对
1,b(a-b)²-(a-b)³
=(a-b)²[b-(a-b)]
=(a-b)²(2b-a)
2,a²(x-y)²+2a(x-y)³
=a(x-y)²[a+2(x-y)]
=a(x-y)²(a+2x-2y)
3,(x-2)²-y(2-x)²...
全部展开
1,b(a-b)²-(a-b)³
=(a-b)²[b-(a-b)]
=(a-b)²(2b-a)
2,a²(x-y)²+2a(x-y)³
=a(x-y)²[a+2(x-y)]
=a(x-y)²(a+2x-2y)
3,(x-2)²-y(2-x)²
=(x-2)²-y(x-2)²
=(x-2)²(1-y)
4,5(x-y)³+10(y-x)²
=5(x-y)³+10(x-y)²
=5(x-y)²(x-y+2)
5,10a(x-y)³-5b(y-x)²
=10a(x-y)³-5b(x-y)²
=5(x-y)²[2a(x-y)-b]
=5(x-y)²(2ax-2ay-b)
收起
1、(2b-a)(a-b)²
2、a(x-y)²(a+2x-2y)
3、(x-2)²(1-y)
4、5(x-y)²(x-y+2)
5、5(x-y)²(2ax-2ay-b)
1,
b(a-b)²-(a-b)³
=(a-b)²(b-a+b)
=(a-b)²(2b-a)
2,
a²(x-y)²+2a(x-y)³
=a(a+2x-2y)(x-y)²
3,
(x-2)²-y(2-x)²
=(x-2)...
全部展开
1,
b(a-b)²-(a-b)³
=(a-b)²(b-a+b)
=(a-b)²(2b-a)
2,
a²(x-y)²+2a(x-y)³
=a(a+2x-2y)(x-y)²
3,
(x-2)²-y(2-x)²
=(x-2)²-y(x-2)²
=(x-2)²(1-y)
4,
5(x-y)³+10(y-x)²
=5(x-y)²(x-y+2)
5,
10a(x-y)³-5b(y-x)²
=5(x-y)²(2ax-2ay-b)
收起