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因式分解;第二题:(5x-3y)²-(3x-5y)²
人气:455 ℃ 时间:2019-10-03 22:43:53
解答
(5x-3y)²-(3x-5y)²
=(5x-3y+3x-5y)(5x-3y-3x+5y)
=(8x-8y)(2x+2y)
=8*(x-y)*2*(x+y)
=16*(x+y)(x-y)
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