Question

50 points! Need answer ASAP! Thanks in advance!

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

7x3 + x + 6
3x3 − 9x − 10
3x3 + 9x + 10
7x3 − x − 6

Answer 1

Option 4: 7x³ - x - 6

Explanation:

(5x³ − 5x − 8) + (2x³ + 4x + 2)

5x³ + 2x³ - 5x + 4x - 8 + 2

7x³ - x - 6

Answer 2

Option D,
`7x^3-x-6`

Explanation:

Step 1: Simplify

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

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

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

`7x^3-x-6`

Answer: Option D,
`7x^3-x-6`