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Simplifying
(X2 + -7) = 0
Reorder the terms:
(-7 + X2) = 0
Remove parenthesis around (-7 + X2)
-7 + X2 = 0
Solving
-7 + X2 = 0
Solving for variable 'X'.
Move all terms containing X to the left, all other terms to the right.
Add '7' to each side of the equation.
-7 + 7 + X2 = 0 + 7
Combine like terms: -7 + 7 = 0
0 + X2 = 0 + 7
X2 = 0 + 7
Combine like terms: 0 + 7 = 7
X2 = 7
Simplifying
X2 = 7
Take the square root of each side:
X = {-2.645751311, 2.645751311}
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