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GREYUIT [131]
3 years ago
5

What is the value of f(x) = 2 • 2^x for f(–2)? Will Give brainliest answer!!!

Mathematics
1 answer:
Sedbober [7]3 years ago
5 0
For f(-2), x will equal -2.

Plug the x-value into the equation:

2 \times 2^{-2}

A negative exponent means that the term turns into a fraction, with 1 as the numerator and the positive exponent as the denominator. 
Solve 2^(-2):

2^{-2} =  \frac{1}{2^{2}} =  \frac{1}{4}

Solve the problem:

2 \times \frac{1}{4} = \frac{1}{2}

f(-2) will equal 1/2.
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