Question

How do you find the sum or difference of `(2x^2-7)+(8-5x^2)`?

Answer 1

`1-3x^2`

Explanation:

`(2x^2-7)+(8-5x^2)`

First remove the parenthesis, they are serving no purpose here:

`2x^2-7+8-5x^2`

Add like terms:

`1-3x^2`