Question

How do you simplify `4a^2+3a+(a+7)2a`?

Answer 1

`=6a^2 +17a`

Explanation:

`4a^2 +3a +color(blue)((a+7)2a`

`=4a^2 +3a +color(blue)(2a^2 +14a`

Grouping like terms:

`=color(green)(4a^2+ 2a^2) + color(green)(3a+14a)`

`=6a^2 +17a`