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Simplifying
(3x2 + -1) = 11
Reorder the terms:
(-1 + 3x2) = 11
Remove parenthesis around (-1 + 3x2)
-1 + 3x2 = 11
Solving
-1 + 3x2 = 11
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '1' to each side of the equation.
-1 + 1 + 3x2 = 11 + 1
Combine like terms: -1 + 1 = 0
0 + 3x2 = 11 + 1
3x2 = 11 + 1
Combine like terms: 11 + 1 = 12
3x2 = 12
Divide each side by '3'.
x2 = 4
Simplifying
x2 = 4
Take the square root of each side:
x = {-2, 2}
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