JaelyI303723 JaelyI303723

03-11-2022
Mathematics

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F (x)=x^2+4 what is f(-4)

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SigridE34418 SigridE34418

03-11-2022

ANSWER

f(-4) = 20

EXPLANATION

To find f(-4) we just have to replace x by -4 in function f(x):

[tex]f(-4)=(-4)^2+4[/tex]

First solve the exponents. Remember that if the exponent is even and the result is always positive, either the base is positive or negative:

[tex]f(-4)=16+4=20[/tex]

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