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erastovalidia [21]
3 years ago
7

HELP PLEASE ! HURRY UPPPPPPP​

Mathematics
1 answer:
LUCKY_DIMON [66]3 years ago
5 0

Answer:

just wondering if you still need help with this

Step-by-step explanation:

why is this on my timeline?

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F(x)= √x-5. find f-2
rodikova [14]

For this case we have:

Be a function of the form y = f (x)

Where:

f (x) = \sqrt {x-5}

If we want to find f (-2), we substitute x = -2, then:

f (-2) = \sqrt {-2-5}\\f (-2) = \sqrt {-7}

Since we have a negative root, the result will be given by complex numbers. By definition:

\sqrt {-1} = i

So:

f (-2) = \sqrt {7} i

Answer:

f (-2) = \sqrt {7} i


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