2x^2+4x^2-30=0

Solution for 2x^2+4x^2-30=0 equation:

Simplifying
2x2 + 4x2 + -30 = 0

Reorder the terms:
-30 + 2x2 + 4x2 = 0

Combine like terms: 2x2 + 4x2 = 6x2
-30 + 6x2 = 0

Solving
-30 + 6x2 = 0

Solving for variable 'x'.

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

Add '30' to each side of the equation.
-30 + 30 + 6x2 = 0 + 30

Combine like terms: -30 + 30 = 0
0 + 6x2 = 0 + 30
6x2 = 0 + 30

Combine like terms: 0 + 30 = 30
6x2 = 30

Divide each side by '6'.
x2 = 5

Simplifying
x2 = 5

Take the square root of each side:
x = {-2.236067978, 2.236067978}