synthia94557 synthia94557

15-05-2020
Mathematics

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If g(x) = x ² + 2x -8, evaluate f(-2)

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TheBlueFox TheBlueFox

15-05-2020

Answer: -8

Explanation: If g(x) = x² + 2x - 8, then g(-2) = (-2)² + 2(-2) - 8

which simplifies to 4 + (-4) - 8 or 0 - 8 which is -8.

Remember to always use parentheses when

substituting your given value in for x.

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