To find f(-5), we substitute -5 for x in the expression for f(x).
f(x) = -x^2 + 9x - 17
f(-5) = -(-5)^2 + 9(-5) - 17
Simplifying,
f(-5) = -25 - 45 - 17
f(-5) = -87
Given f, left bracket, x, right bracket, equals, minus, x, squared, plus, 9, x, minus, 17f(x)=−x
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+9x−17, find f, left bracket, minus, 5, right bracketf(−5)
1 answer