Question

question
given ( f(x) = -x^2 - 7x ), find ( f(-10) )
answer attempt 1 out of 3

Explanation:

Step1: Substitute \( x = -10 \) into \( f(x) \)

We have the function \( f(x) = -x^2 - 7x \). Substitute \( x = -10 \) into the function: \( f(-10)=-(-10)^2 - 7\times(-10) \).

Step2: Calculate each term

First, calculate \( (-10)^2 = 100 \), so \( -(-10)^2=- 100 \). Then, calculate \( 7\times(-10)=-70 \), so \( -7\times(-10) = 70 \).

Step3: Combine the terms

Now, combine the two results: \( f(-10)=-100 + 70 \).

Step4: Get the final result

\( -100+70=-30 \).

Answer:

\(-30\)