Question

X^2 +18 =15 could anyone help me with this?

Answer 1

Answer: x =
`√(-3)` or x = 3i

Explanation:

So first you subtract 18 from both sides to cancel out the 18 on the left side.

x^2 = -3

Then you take the square root of both sides in order to get x alone. Then you get an answer of x =
`√(-3)` which is an imaginary number and can be written as x = 3i.

Answer 2

x = i√3, -i√3

Explanation:

Simply take the root of both sides, then solve.