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If \(f(x) = x^4 - 3x^3- 2x^2 + 5x ,\) then \(f(-1) =\)

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Re: If \(f(x) = x^4 - 3x^3- 2x^2 + 5x ,\) then \(f(-1) =\)

by Jay@ManhattanReview » Tue Apr 28, 2020 9:28 pm
Vincen wrote: ↑
Tue Apr 28, 2020 8:15 am
 If \(f(x) = x^4 - 3x^3- 2x^2 + 5x ,\) then \(f(-1) =\)

A. -5
B. -3
C. -1
D. 1
E. 3

[spoiler]OA=B[/spoiler]

Source: Magoosh
\(f(-1) = (-1)^4 - 3*(-1)^3- 2*(-1)^2 + 5*(-1)\)

\(f(-1) = 1 + 3 - 2 - 5=-3\)

The correct answer: B

Hope this helps!

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Re: If \(f(x) = x^4 - 3x^3- 2x^2 + 5x ,\) then \(f(-1) =\)

by Scott@TargetTestPrep » Fri May 01, 2020 3:18 am
Vincen wrote: ↑
Tue Apr 28, 2020 8:15 am
 If \(f(x) = x^4 - 3x^3- 2x^2 + 5x ,\) then \(f(-1) =\)

A. -5
B. -3
C. -1
D. 1
E. 3

[spoiler]OA=B[/spoiler]

Source: Magoosh
f(-1) = (-1)^4 - 3(-1)^3 - 2(-1)^2 + 5(-1) = 1 - 3(-1) - 2(1) - 5 = 1 + 3 - 2 - 5 = -3

Answer: B

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