Question

The ordered pair (x,5) is a solution to the function f(x) = x^2 + 1

Answer 1

x = ± 2

Explanation:

Given

f(x) = x² + 1 and (x, 5 ) is a solution then f(x) = 5

Equating the two gives

x² + 1 = 5 ( subtract 1 from both sides )

x² = 4 ( take the square root of both sides )

x = ±
`√(4)` = ± 2

Thus (- 2, 5) and (2, 5) are solutions