What is the sum of 5 {x}^(2) + 3x - 7 \: and \: 12x + 12 \\ ​

Question

What is the sum of

`5 {x}^(2) + 3x - 7 \: and \: 12x + 12 \\`
​

Answer 1

5x² + 15x + 5

Explanation:

Here's one way to do it.

Put corresponding powers of x beneath each other and add the similar terms.

5x² + 3x - 7

12x + 12

5x² + 15x + 5