因式分解a^2-16(a-b)^2 RT,

问题描述:

因式分解a^2-16(a-b)^2
RT,

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

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