The solution of the function f(x) = 13 is x= 3
According to the question we have been the function f(x), that i s
f(x) = x² + 4
We need to find the value of x where we have been given that
f(x) = 13
Therefore, we will put the required value of function f(x) in the above condition we get
x² + 4 = 13
Subtracting 4 both the sides we get,
x² + 4 - 4 = 13 - 4
x² = 9
Taking square root both sides we get,
√x² = √9
x = 3
Hence the value of x is 3.
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