Can someone answer my question? For all x, (3x+7) ^2=?

Michael Sazonov asked Feb 27, 2023

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Michael Sazonov asked Feb 27, 2023

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10 votes

$\\ \tt\longmapsto (3x+7)^2$

$\\ \tt\longmapsto (3x)^2+2(3x)(7)+(7)^2$

$\\ \tt\longmapsto 9x^2+42x+49$

Done

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