3x^2-15=3

Solution for 3x^2-15=3 equation:

Simplifying
3x2 + -15 = 3

Reorder the terms:
-15 + 3x2 = 3

Solving
-15 + 3x2 = 3

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 + 3x2 = 3 + 15

Combine like terms: -15 + 15 = 0
0 + 3x2 = 3 + 15
3x2 = 3 + 15

Combine like terms: 3 + 15 = 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}