x(x-5)^2+x(-5+x)(x+5)
答案:5 悬赏:10 手机版
解决时间 2021-01-23 13:21
- 提问者网友：练爱
- 2021-01-22 18:52
x(x-5)^2+x(-5+x)(x+5)
最佳答案
- 五星知识达人网友：山河有幸埋战骨
- 2021-01-22 19:35
x(x^2 - 10x + 25 + x^2 - 25)
x(4x^2 - 10x)
4x^3 - 10x^2
x(4x^2 - 10x)
4x^3 - 10x^2
全部回答
- 1楼网友：罪歌
- 2021-01-22 23:23
2x³－10x²
- 2楼网友：行雁书
- 2021-01-22 22:19
解x(x-5)^2+x(-5+x)(x+5)
=x(x-5)^2+x(x-5)(x+5)
=（x-5）[x（x-5）+x（x+5）]
=（x-5）（2x^2)
=2x^2(x-5)
=x(x-5)^2+x(x-5)(x+5)
=（x-5）[x（x-5）+x（x+5）]
=（x-5）（2x^2)
=2x^2(x-5)
- 3楼网友：行雁书
- 2021-01-22 21:03
=x(x-5)(x-5)+x(x-5)(x+5)
=(x^2-5x)(x-5)+(x^2+5x)（x-5)
=2x^2(x-5)
=2x^3-10x^2
=(x^2-5x)(x-5)+(x^2+5x)（x-5)
=2x^2(x-5)
=2x^3-10x^2
- 4楼网友：笑迎怀羞
- 2021-01-22 19:51
x(x-5)²+x(-5+x)(x+5)
=x[(x-5)²+(x-5)(x+5)]
=x[(x-5)(x-5+x+5)]
=x[2x(x-5)]
=2x³-10x²
=x[(x-5)²+(x-5)(x+5)]
=x[(x-5)(x-5+x+5)]
=x[2x(x-5)]
=2x³-10x²
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