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Simplifying
3x2 + -2 = 145
Reorder the terms:
-2 + 3x2 = 145
Solving
-2 + 3x2 = 145
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '2' to each side of the equation.
-2 + 2 + 3x2 = 145 + 2
Combine like terms: -2 + 2 = 0
0 + 3x2 = 145 + 2
3x2 = 145 + 2
Combine like terms: 145 + 2 = 147
3x2 = 147
Divide each side by '3'.
x2 = 49
Simplifying
x2 = 49
Take the square root of each side:
x = {-7, 7}
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