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F(x)=3x^2+x f(x)=3x 2 +x \text{Find }f(-5) Find f(−5)

User Indraforyou
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1 Answer

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14 votes

So the equation given is:
3x^2+x

What do we find: f(-5)

To find f(-5), we must plug '-5' into the equation in place of the 'x'


f(-5) = 3(-5)^2+(-5) = 3 * 25 -5=75-5=70

Answer: f(-5) = 70

Hope that helps!

User Ishk
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