13*x^2-15=0

Solution for 13*x^2-15=0 equation:

Simplifying
13x2 + -15 = 0

Reorder the terms:
-15 + 13x2 = 0

Solving
-15 + 13x2 = 0

Solving for variable 'x'.

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

Add '15' to each side of the equation.
-15 + 15 + 13x2 = 0 + 15

Combine like terms: -15 + 15 = 0
0 + 13x2 = 0 + 15
13x2 = 0 + 15

Combine like terms: 0 + 15 = 15
13x2 = 15

Divide each side by '13'.
x2 = 1.153846154

Simplifying
x2 = 1.153846154

Take the square root of each side:
x = {-1.074172311, 1.074172311}