Question

Solve y = x^2 + 2 solve for x

Answer 1

Solve y = x^2 + 2 for x:

1) Isolate x^2:  x^2 = y - 2

2) Find the square root of this result:  x = plus or minus √(y-2)   (answer)

Answer 2

$y = x^2 + 2$

To solve for  x we need to get x alone

$y = x^2 + 2$

To get x alone, we need to remove +2

subtract 2 on both sides

$y-2= x^2 + 2-2$

$y-2 = x^2$

Take square root on both sides

$+-\sqrt{y-2} = x$

We got x alone

$x = +-\sqrt{y-2}$