Question

Factor k2 + 13k + 12.

Answer 1

13k hmm... we need to split that right?

Answer 2

i think

Answer 3

I see a 12 to the right, and a '1' to the left (with k^2), and merlin's beard, 12 +1 do make 13!!! what do you think now? :p

Answer 4

*does

Answer 5

just to tell you the two is a exponent

Answer 6

Yeah I understand that..
umm...
\[k^2 + 13k + 12=0\]
Now, I split '13k' as sum of '12k' and 'k', suits you?

Answer 7

\[k^2 + 13k + 12 \]
\[= k^2 + k + 12k + 12 \]
\[= k(k+1)+12(k+1) \]
\[= (k+1)(k+12)\]