因式分解:(1)4a的2n+4次方-9(2)(m+n)²-(x-y)²

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因式分解:(1)4a的2n+4次方-9(2)(m+n)²-(x-y)²
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因式分解:(1)4a的2n+4次方-9(2)(m+n)²-(x-y)²
因式分解:(1)4a的2n+4次方-9(2)(m+n)²-(x-y)²

因式分解:(1)4a的2n+4次方-9(2)(m+n)²-(x-y)²
:(1)4a的2n+4次方-9
=4a^2(n+2)-3^2
=[2a^(n+2)-3][2a^(n+2)+3]
(2)(m+n)²-(x-y)²
=(m+n-x+y)(m+n+x-y)