Question

How do you simplify `x (7+x)`?

Answer 1

`=color(blue)(x^2 +7x`

Explanation:

`color(blue)(x)(7+x)`
Here `color(blue)(x)` needs to be multiplied with each of the terms within the brackets.

`=color(blue)(x).(7) +color(blue)(x).(x)`

`=7x +x^2`

`=color(blue)(x^2 +7x`