计算(1) x²+xy/x-y÷xy/x-y (2)a/a-b*(b-a/b)²
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(x²+xy)/(x-y)÷xy/(x-y)
=x(x+y)/(x-y)×(x-y)/xy
=(x+y)/y
a/(a-b)*(b-a/b)²
=a/(a-b)*(b-a)²/b²
=a/(a-b)*(a-b)²/b²
=a(a-b)/b²
【数学辅导团】为您解答,不理解请追问,理解请及时选为满意回答!(*^__^*)谢谢!
(x²+xy)/(x-y)÷xy/(x-y)
=x(x+y)/(x-y)×(x-y)/xy
=(x+y)/y
a/(a-b)*(b-a/b)²
=a/(a-b)*(b-a)²/b²
=a/(a-b)*(a-b)²/b²
=a(a-b)/b²
【数学辅导团】为您解答,不理解请追问,理解请及时选为满意回答!(*^__^*)谢谢!
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还有两个 (1)a-b/a+b*a四次方-a²b²/a²-ab (2)4x²-4xy+y²/2x+y÷(4x²-y²)
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