Question

Evaluate the equation the you in the picture up above.

Evaluate f(x) =

Answer 1

f(x) = -2x² + 4 Find f(4) ---> x = 4, so you need to substitute the number in for x in the function

f(x) = -2x² + 4

f(4) = -2(4)² + 4 Square 4

f(4) = -2(16) + 4 Multiply -2 and 16

f(4) = -32 + 4 Simplify

f(4) = -28