Answer:
f(- 2) = 16
Step-by-step explanation:
Substitute x = - 2 into f(x), that is
f(- 2) = 5(- 2)² - 4 = 5(4) - 4 = 20 - 4 = 16
Answer:
16
Step-by-step explanation:
Since f(x) is 5x^2-4
And f(2) is given it means we will have to substitute the value for x
So we have
5(2)^2-4
5(4)-4
20-4
16
Therefore f(2) is 16
