Question

How do you factor `4u^2+9u+5` by grouping?

Answer 1

`4u^2+9u+5=(4u+5)(u+1)`

Explanation:

`4u^2+9u+5`

`=(4u^2+4u)+(5u+5)`

`=4u(u+1)+5(u+1)`

`=(4u+5)(u+1)`