分解因式1.2a(x-y)-3b(y-x)2.-x^y-2xy+35y3.a^(x-y)-4b^(x-y)若|a+2|+b^-2b+1=0,求a^b+ab^的值解不等式:(2x-5)^-(3x+1)^>13(x^-10)

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