(3分之2根号3-4根号2)x(-二分之一根号6)

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原消兆式=(x+2)/x(x-2)-(x-1)/(x-2)2
=[(x+2)(x-2)-x(x-1)]/x(x-2)2
=(x2-4-x2+x)/拿枯租败困x(x-2)2
=(x-4)/x(x-2)2

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=-1/3*√18+2√12
=-√2+4√3

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