SOLUTION: f(x) = 3x(2x – 1). f(–1) =

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Question 92935This question is from textbook
: f(x) = 3x(2x – 1). f(–1) = This question is from textbook

Found 2 solutions by psbhowmick, Earlsdon:
Answer by psbhowmick(878) About Me  (Show Source):
You can put this solution on YOUR website!
f(x) = 3x(2x – 1)
Replace 'x' with '-1' on both sides of (1)
f(-1) = 3(-1)[2(-1) – 1]
f(-1) = -3[-2 – 1]
f(-1) = -3*(-2) = 6

Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
If f(x) = 3x(2x-1), find f(-1)
To do this, you just substitute -1 into the given function where ever there is an x.
f(-1) = 3(-1)(2(-1)-1) Evaluate the right side.
f(-1) = -3(-2-1)
f(-1) = -3(-3)
f(-1) = 9...and there you have it!