Question

If f(x)=5x^2 and g(x)=x^2-4x-8, find (f-g)(x)

Important!!!

Answer 1

Option B.

Explanation:

(f-g)(x) = f(x)-g(x)

= (5x²-3) - (x²-4x-8)

=5x²-3 -x² +4x +8 ( - sign outside will multiply each sign inside)

=4x² +4x + 5