# How do you write (3x^2-4)+(5x^2+8) in standard form?

Jun 7, 2017

See a solution process below:

#### Explanation:

First, remove all of the terms from parenthesis. Be careful to handle the signs of each individual term correctly:

$3 {x}^{2} - 4 + 5 {x}^{2} + 8$

Next, group like terms:

$3 {x}^{2} + 5 {x}^{2} - 4 + 8$

Now, combine like terms:

$\left(3 + 5\right) {x}^{2} + \left(- 4 + 8\right)$

$8 {x}^{2} + 4$