20=3*x^2

Solution for 20=3*x^2 equation:

Simplifying
20 = 3x2

Solving
20 = 3x2

Solving for variable 'x'.

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

Add '-3x2' to each side of the equation.
20 + -3x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
20 + -3x2 = 0

Add '-20' to each side of the equation.
20 + -20 + -3x2 = 0 + -20

Combine like terms: 20 + -20 = 0
0 + -3x2 = 0 + -20
-3x2 = 0 + -20

Combine like terms: 0 + -20 = -20
-3x2 = -20

Divide each side by '-3'.
x2 = 6.666666667

Simplifying
x2 = 6.666666667

Take the square root of each side:
x = {-2.581988898, 2.581988898}