# What is the standard form of a polynomial (4a^2 + 9a − 5) + (6a^2 − 5)?

Jul 1, 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:

$4 {a}^{2} + 9 a - 5 + 6 {a}^{2} - 5$

Next, group like terms in descending order of the exponent::

$4 {a}^{2} + 6 {a}^{2} + 9 a - 5 - 5$

Now, combine like terms:

$\left(4 + 6\right) {a}^{2} + 9 a + \left(- 5 - 5\right)$

$10 {a}^{2} + 9 a + \left(- 10\right)$

$10 {a}^{2} + 9 a - 10$