Question

Choose the correct simplification of (5x3 − 5x − 8) + (2x3 + 4x + 2).

Answer 1

5x^3 - 5x - 8 + 2x^3 + 4x + 2

7x^3 - x - 6 (some like terms)

Answer 2

The simplified form of the given expression is
`7x^3-x-6`.

Explanation:

The given expression is

`(5x^3-5x-8)+(2x^3+4x+2)`

`5x^3-5x-8+2x^3+4x+2`

Combine like terms,

`(5x^3+2x^3)+(-5x+4x)+(-8+2)`

`7x^3+(-x)+(-6)`

`7x^3-x-6`

Therefore the simplified form of the given expression is
`7x^3-x-6`.