Answer:
[tex]-2x^{2} +6x+4[/tex]
Step-by-step explanation:
Since it is subtraction, you have to switch the signs on the equation to the right of the sign.
I set it up like this and subtracted straight down.
[tex]3x^{2} +8x-7\\-5x^{2} -2x+11[/tex]
then simplify:
[tex]-2x^{2} +6x+4[/tex]
