Can $y= 4x^2 + 12x + 9$ be factored? If so what are the factors ?

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Answer 1 · 2016-04-01T19:44:46

$color(green)((2x+3)^2=(2x+3)(2x+3))$

You could use the quadratic formula
or the "AC Method"
but trying out factors of $4$ together with factors of $9$ has this solution fairly quickly.

Can y= 4x^2 + 12x + 9 y= 4x^2 + 12x + 9 be factored? If so what are the factors ?