-64x^2+216=0

Solution for -64x^2+216=0 equation:

Simplifying
-64x2 + 216 = 0

Reorder the terms:
216 + -64x2 = 0

Solving
216 + -64x2 = 0

Solving for variable 'x'.

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

Add '-216' to each side of the equation.
216 + -216 + -64x2 = 0 + -216

Combine like terms: 216 + -216 = 0
0 + -64x2 = 0 + -216
-64x2 = 0 + -216

Combine like terms: 0 + -216 = -216
-64x2 = -216

Divide each side by '-64'.
x2 = 3.375

Simplifying
x2 = 3.375

Take the square root of each side:
x = {-1.837117307, 1.837117307}