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Natali [406]
2 years ago
11

PLEASE HELP!!! If f(x) = -2x^2 + x - 5, what is f(3)?

Mathematics
2 answers:
kow [346]2 years ago
4 0

Answer:

  • <u>f(3) = -10</u>

Step-by-step explanation:

<u>Given</u>

  • f(x) = -2x² + x - 5

<u>Solving</u>

  • To find f(3), substitute x = 3 in the function
  • ⇒ f(3) = -2(3)² + (3) + 5
  • ⇒ f(3) = -2(9) + 8
  • ⇒ f(3) = -18 + 8
  • ⇒ <u>f(3) = -10</u>
Vesna [10]2 years ago
3 0

Answer:

f(3) = 6

Step-by-step explanation:

f(x)=2x^2 + x -5

f(3) = 2 (3)^2 + (3) - 5

f(3) = 8 + 3 - 5

f(3) = 11-5

f(3) = 6

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\huge \mathbb{\green{\fbox{\pink{ANSWER}}}}

\\  \:  \:  \implies \: sin^{4} \: \theta + cos^{4} \: \theta \rightarrow  \blue{ \frac{1}{2} }

\\ \\ \:  \large \mathfrak \green{Solution}  :

\\  \bf  \: Given :

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\\ \\\sf \rightarrow \: (\frac{1}{ \sqrt{2} } ) ^{4}  +(\frac{1}{ \sqrt{2} } ) ^{4}

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