怎么解25(x+y)²-(x-y)²
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解决时间 2021-03-26 06:50
- 提问者网友:孤山下
- 2021-03-25 14:31
怎么解25(x+y)²-(x-y)²
最佳答案
- 五星知识达人网友:一袍清酒付
- 2021-03-25 14:52
25(x+y)²-(x-y)²
=[5(x+y)]²-(x-y)²
=[5(x+y)+(x-y)][5(x+y)-(x-y)]
=(6x+4y)(4x+6y)
=4(3x+2y)(2x+3y)
=[5(x+y)]²-(x-y)²
=[5(x+y)+(x-y)][5(x+y)-(x-y)]
=(6x+4y)(4x+6y)
=4(3x+2y)(2x+3y)
全部回答
- 1楼网友:痴妹与他
- 2021-03-25 16:43
25(x+y)²-(x-y)²
25(x+y)²-(x-y)²
=[5(x+y)+(x-y)][5(x+y)-(x-y)]
=(6x+4y)(4x+6y)
=4(3x+2y)(2x+3y)
25(x+y)²-(x-y)²
=[5(x+y)+(x-y)][5(x+y)-(x-y)]
=(6x+4y)(4x+6y)
=4(3x+2y)(2x+3y)
- 2楼网友:洒脱疯子
- 2021-03-25 15:39
25(x+y)²-(x-y)²
= (5x+5y)²-(x-y)²
= (5x+5y+x-y)(5x+5y-x+y)
= (6x+4y)(4x+6y)
= 4(3x+2y)(2x+3y)
= (5x+5y)²-(x-y)²
= (5x+5y+x-y)(5x+5y-x+y)
= (6x+4y)(4x+6y)
= 4(3x+2y)(2x+3y)
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