Question

Given f, left bracket, x, right bracket, equals, minus, x, squared, minus, 10, x, minus, 9f(x)=−x
2
−10x−9, find f, left bracket, minus, 1, right bracketf(−1)
Answer

Answer 1

To find f(-1), we substitute -1 into the given function f(x).

f(-1) = (-1)^2 - 10(-1) - 9(-1)

= 1 + 10 + 9

= 20