How do you factor by grouping: #3x^2 + 3 + x^3 + x#?
The factored form of the expression is
First, rearrange the terms. Then, factor
This does it:
I am not sure about the "by grouping" method, but I stumbled on a way to factor that expression.
I noticed that it could be written
From there I put the 3 and the x inside a second set of parentheses and saw that
A preferable way to write it would probably be
I hope this helps,