Question

If f(x) = 4 – x^2 and g(x) = 6x, which expression is equivalent to (g – f)(3)?

6 – 3 – (4 + 3)^2
6 – 3 – (4 – 3^2)
6(3) – 4 + 3^2
6(3) – 4 – 3^2

Answer 1

well

g(x)-f(x) = 6x - 4 + x^2

now replace x with 3

Answer 2

thanks!