Expand and simplify (y + 3)(y + 7)

Glasses asked Apr 8, 2023

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Glasses asked Apr 8, 2023

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20 votes

⇒
$=(y+3)(y+7)\\=y(y+7)+3(y+7)\\=y^(2) +7y+3y+21\\=y^(2) +10y+21$

Attached is the solution in detail

Vlatko answered Apr 13, 2023

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