因式分解(a-b)^2-6(b-a)+9.25(x-y)^2+10(y-x)+1
1个回答
(a-b)^2-6(b-a)+9.
=(a-b-3)²
25(x-y)^2+10(y-x)+1
=[5(x-y)]^2-10(x-y)+1
=[5(x-y)-1]²
=(5x-5y-1)²
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