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30-06-2014
Mathematics

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A function f (x)=-8x^2. What is f (-3)?

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mariamikayla mariamikayla

30-06-2014

f(x)= -8x²

f(-3)= -8* (-3)²

f(-3)= -8 * 9

f(-3)= -72

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30-06-2014

f(x) = -8x²

To find the value of f(-3), put -3 in place of 'x' in the definition of the function.

f(-3) = -8(-3)²

f(-3) = -8(9) = -72

Answer Link

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