Question

因式分解(x-2)^2-3(x+2)(2-x) 因式分解a^2b^2(a+b)-10ab(a+b)+25(a+b)

Answer 1

(x-2)²-3(x+2)(2-x)

=(x-2)²+3(x+2)(x-2)

=(x-2)[(x-2)+3(x+2)]

=(x-2)(4x+4)

=4(x-2)(x+1)

a²b²(a+b)-10ab(a+b)+25(a+b)

=(a+b)(a²b²-10ab+25)

=(a+b)(ab-5)²

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