Question

F(x)=2x^2+9 Find f(-5)

Answer 1

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Answer = 59

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Known

f(x) = 2x² + 9

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Question

f(-5) = ?

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Way to do

#as you the x inside the (x) changed into (-5) it means that you need to change the x into -5.

f(-5) = 2(-5)² + 9

= 2 × 25 + 9

= 50 + 9 = 59

#So f(-5) = 59

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Answer 2

Answer:

59

Step-by-step explanation:

Given

f(x) = 2x² + 9

f ( -5) = 2 * ( -5)² + 9

= 25 * 2 + 9

= 50 + 9

= 59