3 years ago

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

1 answer:

8 0

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

It's 7s+4.

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