42=3x^2

Solution for 42=3x^2 equation:

Simplifying
42 = 3x2

Solving
42 = 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.
42 + -3x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
42 + -3x2 = 0

Add '-42' to each side of the equation.
42 + -42 + -3x2 = 0 + -42

Combine like terms: 42 + -42 = 0
0 + -3x2 = 0 + -42
-3x2 = 0 + -42

Combine like terms: 0 + -42 = -42
-3x2 = -42

Divide each side by '-3'.
x2 = 14

Simplifying
x2 = 14

Take the square root of each side:
x = {-3.741657387, 3.741657387}