помогите решить данное выражение, дам 15 баллов. Created by 2301120156p17qc7. algebra-ru

помогите решить данное выражение, дам 15 баллов...

2301120156p17qc7 @2301120156p17qc7

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помогите решить данное выражение, дам 15 баллов

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Banabanana

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$\tt (x-9):\cfrac{x^2-18x+81}{x+9} =(x-9):\cfrac{(x-9)^2}{x+9} =(x-9)\cdot\cfrac{x+9}{(x-9)^2}=\cfrac{x+9}{x-9}\\\\ npu \ x=45:\\\\ \cfrac{x+9}{x-9}=\cfrac{45+9}{45-9}=\cfrac{54}{36} =\cfrac{3}{2} =1.5$

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