Someone! has to do with simplifying square roots!

If f(x)=x^3 and g(x)=2x+7 when g(x)=-5

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

Select the correct answer from the drop-down menu. subtracting 3xy^2 from 8xy^2 gives the same result as the expression. [tex]3xy ^{2} - 8xy ^{2} [/tex][tex] { - 7xy}^{2} - {2xy}^{2} [/tex][tex] {7xy}^{2} - {2xy}^{2} [/tex]