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

Mathematics

2 answers:

Marrrta [24]3 years ago

6 0

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<h3>Answer = 59</h3>

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<h3>Known </h3>

f(x) = 2x² + 9

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<h3>Question</h3>

f(-5) = ?

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#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

<em>#</em><em>S</em><em>o</em><em> </em><em>f</em><em>(</em><em>-</em><em>5</em><em>)</em><em> </em><em>=</em><em> </em><em>5</em><em>9</em>

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Serga [27]3 years ago

3 0

Answer:

Step-by-step explanation:

Given

f(x) = 2x² + 9

f ( -5) = 2 * ( -5)² + 9

= 25 * 2 + 9

= 50 + 9

= 59

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