Question

How do you simplify `(3x^2 − 2) − (2x^2 − 6x + 3)`?

Answer 1

`x^2+6x-5`

Explanation:

You can simply sum and subtract the terms with the same power of `x`: changing the sign of everything inside the second brackets, we have that the expression is

`3x^2-2-2x^2+6x-3`

Rearrange it so that the exponents are in order:

`3x^2-2x^2+6x-2-3`

Now you can sum the terms involving `x^2` and the constants:

`x^2+6x-5`