Question

Question 7 of 24

1 Point
Add.
6x2 -5x +3 +
3x2 + 7 x-8

O A. 9x2 - 2x + 5
O B. 9x2 + 2x - 5
O c. 9x2 + 12x-5
D. 9x2 + 2x + 11

Answer 1

The given expression is,

`-2x^2+8x-9+4x+7x^2+2`

Group like terms.

`(-2x^2+7x^2)+(8x+4x)-9+2`

Add the grouped terms.

`5x^2+12x-7`

So, the given expression is equivalent to,

`5x^2+12x-7`

Therefore, option C is correct.