(a²-4ab+4b²)(a²+4ab+4b²)请写出过程,
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(a²-4ab+4b²)(a²+4ab+4b²)请写出过程,(a²-4ab+4b²)(a²+4ab+4b²)请写出过程,
(a²-4ab+4b²)(a²+4ab+4b²)请写出过程,
(a²-4ab+4b²)(a²+4ab+4b²)请写出过程,
(a²-4ab+4b²)(a²+4ab+4b²)请写出过程,
(a²-4ab+4b²)(a²+4ab+4b²)
=(a-2b)²(a+2b)²
=[(a-2b)(a+2b)]²
=(a²-4b²)²
=(a²)²-2(a²)(4b²)+(4b)²
=a的4次方-8a²b²+16b的4次方
原式=(a-2b)²(a+2b)²