Question

factorise K square - 2 k - 15​

Answer 1

Answer:

k^2-2k-15=0

=k^2 -5k + 3k -15=0

=k(k-5) + 3(k-5)=0

=(k-5)(k+3)=0

So, k=5 or -3

Answer 2

Hello.

Here is your answer below,

$k {}^{2} - 2 k - 15 \\ = > k {}^{2} - 5k + 3k - 15 \\ = > k(k - 5) + 3(k - 5) \\ = > (k - 5)(k + 3)$

I hope that helps you