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AfilCa [17]
2 years ago
13

F (x) = x2 + 4 What is the value of x when f (x) = 42 A. -2 В. 0 C 12 D. 20

Mathematics
1 answer:
Naily [24]2 years ago
4 0

Answer:

f(x)=X^2+4

f(x)=42

42=X^2+4

X^2+4=42

X^2=42-4

X^2=38

X=sqrt(38)=6.16

\sqrt{?}

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