Question

How do you simplify `2q ^ { 2} + q ^ { 2} - 10q ^ { 2} + - q ^ { 2}`?

Answer 1

`-8q^2`

Explanation:

As these are all like terms (all `q^2`) you can add them all together. The tricky bit is the +- at the end which becomes a minus. The following line may help too:

`2q^2cancel(+q^2)-10q^2cancel(-q^2)`