请你先化简分式x²-2xy+y²/x²-xy÷(xy的-1次方-x的-1次方y),再将x=3-√3,y=√3代人求值.
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请你先化简分式x²-2xy+y²/x²-xy÷(xy的-1次方-x的-1次方y),再将x=3-√3,y=√3代人求值.
请你先化简分式x²-2xy+y²/x²-xy÷(xy的-1次方-x的-1次方y),再将x=3-√3,y=√3代人求值.
请你先化简分式x²-2xy+y²/x²-xy÷(xy的-1次方-x的-1次方y),再将x=3-√3,y=√3代人求值.
x²-2xy+y²/x²-xy÷(xy的-1次方-x的-1次方y)
=(x-y)²/x(x-y)÷(x/y-y/x)
=(x-y)/x÷(x²-y²)/xy
=(x-y)÷(x+y)(x-y)/y
=y/(x+y)
=√3/(3-√3+√3)
=√3/3