3x^2-2=30

Solution for 3x^2-2=30 equation:

Simplifying
3x2 + -2 = 30

Reorder the terms:
-2 + 3x2 = 30

Solving
-2 + 3x2 = 30

Solving for variable 'x'.

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

Add '2' to each side of the equation.
-2 + 2 + 3x2 = 30 + 2

Combine like terms: -2 + 2 = 0
0 + 3x2 = 30 + 2
3x2 = 30 + 2

Combine like terms: 30 + 2 = 32
3x2 = 32

Divide each side by '3'.
x2 = 10.66666667

Simplifying
x2 = 10.66666667

Take the square root of each side:
x = {-3.265986324, 3.265986324}