3x^2-5=13

Solution for 3x^2-5=13 equation:

Simplifying
3x2 + -5 = 13

Reorder the terms:
-5 + 3x2 = 13

Solving
-5 + 3x2 = 13

Solving for variable 'x'.

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

Add '5' to each side of the equation.
-5 + 5 + 3x2 = 13 + 5

Combine like terms: -5 + 5 = 0
0 + 3x2 = 13 + 5
3x2 = 13 + 5

Combine like terms: 13 + 5 = 18
3x2 = 18

Divide each side by '3'.
x2 = 6

Simplifying
x2 = 6

Take the square root of each side:
x = {-2.449489743, 2.449489743}