Question

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

Answer 1

`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)`.