7x^2-15=0

Solution for 7x^2-15=0 equation:

Simplifying
7x2 + -15 = 0

Reorder the terms:
-15 + 7x2 = 0

Solving
-15 + 7x2 = 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 + 7x2 = 0 + 15

Combine like terms: -15 + 15 = 0
0 + 7x2 = 0 + 15
7x2 = 0 + 15

Combine like terms: 0 + 15 = 15
7x2 = 15

Divide each side by '7'.
x2 = 2.142857143

Simplifying
x2 = 2.142857143

Take the square root of each side:
x = {-1.463850109, 1.463850109}