Answer:
[tex]2x^{2} +10x-18[/tex]
Step-by-step explanation:
Group like-terms
[tex]=5x^2-3x^2+2x+8x-11-7[/tex]
Add similar elements
[tex]=2x^2+2x+8x-11-7[/tex]
Add similar elements
[tex]=2x^2+10x-11-7[/tex]
Subtract the numbers
[tex]=2x^2+10x-18[/tex]
Result
[tex]2x^{2} +10x-18[/tex]
