. Вычислите а)45^2-2∙25∙45+25^2/36^2-4^2 /-дробь. Created by svetakovilina2307200. algebra-ru

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svetakovilina2307200 @svetakovilina2307200

July 2022 1 9 Report

. Вычислите

а)45^2-2∙25∙45+25^2/36^2-4^2

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Answers & Comments

DimaPuchkov

$\frac{45^2-2\cdot 25\cdot 45 +25^2}{36^2-4^2}=\frac{(45-25)^2}{(36-4)\cdot (36+4)}=\frac{20^2}{32\cdot 40}=\frac{20\cdot 20}{32\cdot 40}=\frac{20}{32\cdot 2}=\frac{10}{32}=\frac{5}{16}$

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