помогите с заданием 3. Created by mateo795. algebra-ru

помогите с заданием 3...

mateo795 @mateo795

May 2022 1 1 Report

помогите с заданием 3

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$\underbrace {(2x+5)^2}_{a^2}-\underbrace {2(2x+5)(x-3)}_{2ab}+\underbrace {(x-3)^2}_{b^2}=\underbrace {\Big ((2x+5)-(x-3)\Big )^2}_{(a-b)^2}=\\\\=(2x+5-x+3)^2=(x+8)^2\\\\Otvet:\; C)\; .$

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