8X^2-243=0

Solution for 8X^2-243=0 equation:

Simplifying
8X2 + -243 = 0

Reorder the terms:
-243 + 8X2 = 0

Solving
-243 + 8X2 = 0

Solving for variable 'X'.

Move all terms containing X to the left, all other terms to the right.

Add '243' to each side of the equation.
-243 + 243 + 8X2 = 0 + 243

Combine like terms: -243 + 243 = 0
0 + 8X2 = 0 + 243
8X2 = 0 + 243

Combine like terms: 0 + 243 = 243
8X2 = 243

Divide each side by '8'.
X2 = 30.375

Simplifying
X2 = 30.375

Take the square root of each side:
X = {-5.511351921, 5.511351921}