Answer:
-1 * (-3)^2 - 12 = -1 * 9 -12 = -9 - 12 = -21
Step-by-step explanation:
Answer:
[tex]\boxed {\boxed {\sf f(-3)= -21}}[/tex]
Step-by-step explanation:
We are given the function:
[tex]f(x)= -x^2-12[/tex]
We want to find f(-3), so we must substitute -3 in for x.
[tex]f(-3)= -(-3)^2 -12[/tex]
Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Addition, Subtraction.
Solve the exponent.
[tex]f(-3)= -(9)-12[/tex]
Distribute the -1 in.
[tex]f(-3)= -9-12[/tex]
Subtract.
[tex]f(-3)= -21[/tex]
For the function -x²-12, f(-3) is equal to 21
