a²-16(a-b)²因式分解

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a²-16(a-b)²因式分解
a²-16(a-b)²因式分解

a²-16(a-b)²因式分解
a²-16(a-b)²
=a²-[4(a-b)]²
=[a+4(a-b)][a-4(a-b)]
=(5a-4b)(4b-3a)

原式=[a+4(a-b)][a-4(a-b)]
=(5a-4b)(4b-3a)

a²-16(a-b)²
=(a+4a-4b)(a-4a+4b)
=(5a-4b)(-3a+4b)

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a²-16(a-b)²
=a²-[4(a-b)]²
=[a+2(a-b)][a-2(a-b)]
=(3a-b)(2b-a)

=(a-4a+b)(a+4a-b)=(b-3a)(5a-b)