Find the value of f (-2) for the function f/left (x/right) = 5x^2-4

Question

Mathematics

Kendall Ortega

15 July, 14:38

Find the value of f (-2) for the function f/left (x/right) = 5x^2-4

+3

Answers (2)

Know the Answer?

Oprah · Answer 1

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

Gideon · Answer 2

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