How do you factor $9a^2 + 24a + 16$ ?

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Answer 1 · 2015-05-10T09:56:50

$9a^2+24a+16 = (3a+4)(3a+4)$

I found this by noticing that $9a^2 = (3a)^2$ and $16 = 4^2$ , then seeing what coefficient of $a$ came out when I multiplied $(3a + 4)(3a + 4)$ .

How do you factor 9a^2 + 24a + 16 9a^2 + 24a + 16 ?