Question

Find f(4)
if f(x) = -2x² + 4

Answer 1

Answer: -28

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Work Shown:

`f(\text{x}) = -2\text{x}^2+4\\\\f(4) = -2(4)^2+4\\\\f(4) = -2(16)+4\\\\f(4) = -32+4\\\\f(4) = -28\\\\`

Step-by-step explanation:

Replace every x with 4. Then use the order of operations PEMDAS to simplify to a single number.