Question

Solve y = x2 - 18 for x.

Answer 1

Explanation:

assuming that x2 = x², then the equation is y= x²-18

y= x²-18

y-18=x²

`√(y-18)=\sqrt{x^(2) }`

`√(y-18)= x\\`

so x =
`√(y-18\\)`