# How do you simplify (8x^2 + 1) + (3x^2 - 2)?

Aug 1, 2016

$11 {x}^{2} - 1$

#### Explanation:

$\left(8 {x}^{2} + 1\right) + \left(3 {x}^{2} - 2\right)$

To simplify it we need to first get rid of the brackets.

$8 {x}^{2} + 1 + 3 {x}^{2} - 2$

Because the sign between two brackets is + therefore the sign in the second bracket (minus-) stays the same.

Then we add $8 {x}^{2}$ and $3 {x}^{2}$ together because they both have ${x}^{2}$ in common and $1$ and $- 2$ because they are ordinary numbers.

$8 {x}^{2} + 3 {x}^{2} + 1 - 2 =$
$= 11 {x}^{2} - 1$