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Simplifying
(X2 + 7) = 12
Reorder the terms:
(7 + X2) = 12
Remove parenthesis around (7 + X2)
7 + X2 = 12
Solving
7 + X2 = 12
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 = 12 + -7
Combine like terms: 7 + -7 = 0
0 + X2 = 12 + -7
X2 = 12 + -7
Combine like terms: 12 + -7 = 5
X2 = 5
Simplifying
X2 = 5
Take the square root of each side:
X = {-2.236067978, 2.236067978}
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