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Evaluate the function.
ƒ(x) = −3x² − x – 15

Find f(−8)


Sagot :

Given ~

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[tex] \tt \: f(x) = −3x² − x – 15[/tex]

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now , put x= -8 in the function ~

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[tex] \tt \: f( - 8) = −3( - 8)² − ( - 8) – 15[/tex]

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[tex] \tt f(-8) = −3(64) − (-8) – 15[/tex]

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[tex]\tt f(-8) = −192 − (-8) – 15[/tex]

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[tex] \tt f(-8) = −192 − (-8) – 15[/tex]

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[tex]\tt f(-8) = −184 – 15 [/tex]

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[tex] \underline{\boxed{\red {\tt f(-8) = - 199}}}{\green ✓} [/tex]

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hope helps ~