10a(x-y)²-5a(y-x) 因式分解
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10a(x-y)²-5a(y-x) 因式分解
10a(x-y)²-5a(y-x) 因式分解
10a(x-y)²-5a(y-x) 因式分解
=5a(y-x)(2y-2x-1)
10(x-y)^2-5a(y-x)
=10(x-y)^2+5a(x-y)
=5(x-y)(2x-2y+a)
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