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  • 27-03-2020
  • Mathematics
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How do you factor?: 4x^2 + 12x + 9 (Please show steps)

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thanosvegan
thanosvegan thanosvegan
  • 27-03-2020

Answer: Rewrite 4x squared as (2x) squared

(2x) squared +12x + 9

rewrite 9 as (3) squared

Check the middle term by multiplying

2ab and compare this result with the middle term in the original expression.

2ab = 2 x (2x) x 3

Simplify 2ab = 12x, then factor using the perfect square trinomial rule. A sqaured + 2ab + b squared = (a + b) squared

A = 2x and B = 3

So your answer is

(2x + 3) squared!

sorry its so long

Answer Link

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