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Find the missing factor 7s^2+25s+12=(s+3)()

1 Answer

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7s^2+25s+12=\\ 7s^2+21s+4s+12=\\ 7s(s+3)+4(s+3)=\\ (s+3)(7s+4)

It's 7s+4.
User Emma Ramirez
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