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harpazo

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If x = 7, evaluate f(x) = -sqrt{2 +x}.
 
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TheJason

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If \(\displaystyle x = 7\), evaluate \(\displaystyle f(x) = -\sqrt{2 +x}\).

Just plug and chug:

\(\displaystyle f(7) = -\sqrt{2 + (7)}\).

\(\displaystyle f(7) = -\sqrt{9}\).

\(\displaystyle f(7) = -3\).
 
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harpazo

Pure Mathematics
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Mar 20, 2018
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If \(\displaystyle x = 7\), evaluate \(\displaystyle f(x) = -\sqrt{2 +x}\).

Just plug and chug:

\(\displaystyle f(7) = -\sqrt{2 + (7)}\).

\(\displaystyle f(7) = -\sqrt{9}\).

\(\displaystyle f(7) = -3\).
Very good.