Question

How do you add `(2c ^ { 2} + 6c + 4) + ( 5c ^ { 2} - 7)`?

Answer 1

`7c^2 + 6c - 3`

Explanation:

Step 1) Eliminate the parenthesis and group like terms:

`2c^2 + 6c + 4 + 5c^2 - 7 =>`

`(2c^2 + 5c^2) + 6c + (4 - 7)`

Step 2) Combine like terms:

`(2 + 5)c^2 + 6c - 3 =>`

`7c^2 + 6c - 3`