400X^2-1000=0

Solution for 400X^2-1000=0 equation:

Simplifying
400X2 + -1000 = 0

Reorder the terms:
-1000 + 400X2 = 0

Solving
-1000 + 400X2 = 0

Solving for variable 'X'.

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

Add '1000' to each side of the equation.
-1000 + 1000 + 400X2 = 0 + 1000

Combine like terms: -1000 + 1000 = 0
0 + 400X2 = 0 + 1000
400X2 = 0 + 1000

Combine like terms: 0 + 1000 = 1000
400X2 = 1000

Divide each side by '400'.
X2 = 2.5

Simplifying
X2 = 2.5

Take the square root of each side:
X = {-1.58113883, 1.58113883}