2x^2-1400=0

Solution for 2x^2-1400=0 equation:

Simplifying
2x2 + -1400 = 0

Reorder the terms:
-1400 + 2x2 = 0

Solving
-1400 + 2x2 = 0

Solving for variable 'x'.

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

Add '1400' to each side of the equation.
-1400 + 1400 + 2x2 = 0 + 1400

Combine like terms: -1400 + 1400 = 0
0 + 2x2 = 0 + 1400
2x2 = 0 + 1400

Combine like terms: 0 + 1400 = 1400
2x2 = 1400

Divide each side by '2'.
x2 = 700

Simplifying
x2 = 700

Take the square root of each side:
x = {-26.457513111, 26.457513111}