Question

question given f(x) = -x² + 9, find f(-5) answer attempt 1 out of 2

Explanation:

Step1: Substitute \( x = -5 \) into \( f(x) \)

Given \( f(x) = -x^2 + 9 \), substitute \( x = -5 \). So we have \( f(-5)= -(-5)^2 + 9 \).

Step2: Calculate the power

First, calculate \( (-5)^2 \), which is \( 25 \). Then the expression becomes \( f(-5)= -25 + 9 \).

Step3: Perform the addition

Now, add \( -25 \) and \( 9 \). \( -25 + 9 = -16 \).

Answer:

\( -16 \)