(2x+5y) (2x-5y) (-4x的平方-25y的平方)计算
人气:347 ℃ 时间:2020-03-19 14:02:31
解答
(2x+5y) (2x-5y) (-4x的平方-25y的平方)
=(4x²-25y²)(-4x²-25y²)
=-(4x²-25y²)(4x²+25y²)
=-(16x^4-625y^4)
=625y^4-16x^4
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