Solve y=x^2+23 for x

Question

asked Apr 19, 2019 90.6k views

2 Answers

Cristian Pena · Answer 1 · 2019-04-23T14:51:51+0000

For this case we must clear x from the given equation:

y = x ^ 2 + 23

We passed 23 subtracting the other side of equality:

y-23 = x ^ 2

By definition,
a ^ 2 = b is written as
a = +/-√(b)

So, we have:

$x = + / -\sqrt{(y-23)$

So, the solution of
y = x ^ 2 + 23 for x is:

$x = + / -\sqrt{(y-23)$

Answer:

$x = + / -\sqrt{(y-23)$

$x1=+\sqrt{(y-23)$

$x2=-\sqrt{(y-23)$