Answer:
[tex] 9{x}^{2} + 2x - 5[/tex]
Option A is the correct option.
Solution,
[tex]7 {x}^{2} - 5x + 3 + 2 {x}^{2} + 7x - 8 \\ [/tex]
Combine like terms:
[tex]7 {x}^{2} + 2 {x}^{2} - 5x + 7x + 3 - 8[/tex]
Simplify:
[tex]9 {x}^{2} + 2x - 5[/tex]
Hope this helps..
Good luck on your assignment..
