Question

How do I factor these four term polynomials?
2c^2 + 6cd + 5c + 15d
3a^2 + 6ab + 4a + 4b

Answer 1

You could factor by grouping

Answer 2

I don't understand how to do that.

Answer 3

Well okay lets do the first one together. \[2c^2+6cd+5c+15d\]
First separate them into two equations :
\[2c^2+6cd\]
\[5c+15d\]