3ax²-3ay四次方 x²(2x-5)+4(5-2x) x³-4xy²
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3ax²-3ay四次方 x²(2x-5)+4(5-2x) x³-4xy²
三个题
三个题
![3ax²-3ay四次方 x²(2x-5)+4(5-2x) x³-4xy²](/uploads/image/z/20228321-65-1.jpg?t=3ax%26%23178%3B-3ay%E5%9B%9B%E6%AC%A1%E6%96%B9+x%26%23178%3B%EF%BC%882x-5%EF%BC%89%2B4%EF%BC%885-2x%EF%BC%89+x%26%23179%3B-4xy%26%23178%3B)
3ax²-3ay四次方
=3a(x²-y^4)
=3a(x-y²)(x+y²)
x²(2x-5)+4(5-2x)
=(2x-5)(x²-4)
=(2x-5)(x-2)(x+2)
x³-4xy²
=x(x²-4y²)
=x(x-2y)(x+2y)
=3a(x²-y^4)
=3a(x-y²)(x+y²)
x²(2x-5)+4(5-2x)
=(2x-5)(x²-4)
=(2x-5)(x-2)(x+2)
x³-4xy²
=x(x²-4y²)
=x(x-2y)(x+2y)
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