Question

Factorise by taking out a common factor first:
3x^2 + 18x +24

Answer 1

it says you have to list factors of 24 and 18 and then use them somehow

Answer 2

Well, you can take out a 3.

Answer 3

You always find the GCF of coefficients. :)

Answer 4

\[\gcd(3,18,24) = 3\]So, you can take out a 3.

Answer 5

\[3x^2 + 18x + 24\]\[3(\underbrace{x^2 + 6x + 8}_{\large\text{factor this}})\]