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If f(x) = 2x^2 - x, find f(-3).

If f(x) = 2x^2 - x, find f(-3).
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3 votes
If f(x) = 2x^2 - x, find f(-3).

User Technik
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2 Answers

1 vote
f(x)=2x^2-x, x=-3

f(-3)=2(-3)^2-(-3)

f(-3)=2(9)+3

f(-3)=18+3

f(-3)=21
User Cppiscute
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8.3k points
3 votes
f(-3)  = 2(-3)^2 - (-3) =  2(9)+3 = 18 + 3 = 21
User Chriswoodford
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8.6k points
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