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Simplifying
3x * x = 154
Multiply x * x
3x2 = 154
Solving
3x2 = 154
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Divide each side by '3'.
x2 = 51.33333333
Simplifying
x2 = 51.33333333
Take the square root of each side:
x = {-7.16472842, 7.16472842}
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