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Simplifying
3x2 + 168 = 180
Reorder the terms:
168 + 3x2 = 180
Solving
168 + 3x2 = 180
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-168' to each side of the equation.
168 + -168 + 3x2 = 180 + -168
Combine like terms: 168 + -168 = 0
0 + 3x2 = 180 + -168
3x2 = 180 + -168
Combine like terms: 180 + -168 = 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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