Question

Solve y = x2-5 for x.
A. X = y +5
B. X=-+ y-5
C. X = y-5
D. X = -+ y+5

Answer 1

y = x^2 - 5

y + 5 = x^2

(Now you need to square root both sides)

√y+5 = x

x = PLUS OR MINUS √y + 5