Cрочно алгебра х^2-9/x+1=8x/x+1. Created by galateta379. algebra-ru

x+1...

galateta379 @galateta379

July 2022 1 10 Report

Cрочно алгебра х^2-9/x+1=8x/x+1

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rosaprekrasnaya48

Ответ:

x=9

Объяснение:

$\frac{x^{2}-9 }{x+1} =\frac{8x}{x+1} ,x\neq 0\\x^{2} -9=8x\\x^{2} -9-8x=0\\x^{2} +x-9x-9=0\\x*(x+1)-9(x+1)=0\\(x+1)*(x-9)=0\\x+1=0\\x-9=0\\x=-1\\x=9 , x\neq -1\\x=9$

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