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

User Thaer A
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⇒
=(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

User Shiv Deepak
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