Answer:
B. 6x^2+2x-7
Step-by-step explanation:
Ok so
(6x^2-3x) + (5x-7)
Then add the like terms
Theres no like terms for 6x^2
Add -3x + 5x which = 2x
Theres also no like terms for -7
SO
Your final answer is 6x^2 + 2x -7
Hope I helped! Have a good day :)
