x^2/x-5+25/5-x

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x^2/x-5+25/5-xx^2/x-5+25/5-xx^2/x-5+25/5-x原式=x²/(x-5)-25/(x-5)=(x²-25)/(x-5)=(x+5)(x-5)/(x

x^2/x-5+25/5-x
x^2/x-5+25/5-x

x^2/x-5+25/5-x
原式=x²/(x-5)-25/(x-5)
=(x²-25)/(x-5)
=(x+5)(x-5)/(x-5)
=x+5