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Simplifying
3x2 + -39 = 6
Reorder the terms:
-39 + 3x2 = 6
Solving
-39 + 3x2 = 6
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '39' to each side of the equation.
-39 + 39 + 3x2 = 6 + 39
Combine like terms: -39 + 39 = 0
0 + 3x2 = 6 + 39
3x2 = 6 + 39
Combine like terms: 6 + 39 = 45
3x2 = 45
Divide each side by '3'.
x2 = 15
Simplifying
x2 = 15
Take the square root of each side:
x = {-3.872983346, 3.872983346}
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