3 years ago

Help please ! Evaluate f(-1) using substitution f(x)=2x^3-3x^2-18x-8

Mathematics

1 answer:

statuscvo [17]3 years ago

4 0

Answer:

Step-by-step explanation:

$f(x) = 2x^3 - 3x^2 -18x - 8\\f(-1) = 2 (-1)^3 - 3(-1) ^2 -18(-1) -8\\f(-1) = 2(-1) -3(1) -18(-1) -8\\f(-1) = -2 -3+18 -8\\f(-1) = 5$

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