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Mathematics
Taniya Chapman
30 April, 15:22
How can you find f (3) if f (x) = - 2x2 - 4?
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Milo Bush
30 April, 16:05
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Answer: f (3) = -20
Step-by-step explanation:
If you look at f (x) and f (3), you can see that 3 is in place of x. That means when x=3, what is f (x). You plug in x=3 into f (x) and solve.
f (3) = -2 (3) ²-2
f (3) = -2 (9) - 2
f (3) = -18-2
f (3) = -20
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