Question

Solve y = x2 +11 for x.

Answer 1

x = ±sqrt(y-11)

Explanation:

y = x^2 +11

Subtract 11 from each side

y -11 = x^2 +11-11

y-11 = x^2

Take the square root of each side

±sqrt(y-11) = sqrt(x^2)

±sqrt(y-11) = x