2 answers:
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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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<h3>Way to do </h3>
#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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Answer:
59
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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