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Simplifying
X2 + -0.4 = 0
Reorder the terms:
-0.4 + X2 = 0
Solving
-0.4 + X2 = 0
Solving for variable 'X'.
Move all terms containing X to the left, all other terms to the right.
Add '0.4' to each side of the equation.
-0.4 + 0.4 + X2 = 0 + 0.4
Combine like terms: -0.4 + 0.4 = 0.0
0.0 + X2 = 0 + 0.4
X2 = 0 + 0.4
Combine like terms: 0 + 0.4 = 0.4
X2 = 0.4
Simplifying
X2 = 0.4
Take the square root of each side:
X = {-0.632455532, 0.632455532}
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