2(21x^2-62)=0

Solution for 2(21x^2-62)=0 equation:

Simplifying
2(21x2 + -62) = 0

Reorder the terms:
2(-62 + 21x2) = 0
(-62 * 2 + 21x2 * 2) = 0
(-124 + 42x2) = 0

Solving
-124 + 42x2 = 0

Solving for variable 'x'.

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

Add '124' to each side of the equation.
-124 + 124 + 42x2 = 0 + 124

Combine like terms: -124 + 124 = 0
0 + 42x2 = 0 + 124
42x2 = 0 + 124

Combine like terms: 0 + 124 = 124
42x2 = 124

Divide each side by '42'.
x2 = 2.952380952

Simplifying
x2 = 2.952380952

Take the square root of each side:
x = {-1.718249386, 1.718249386}