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Simplifying
3x2 + -75 = 12
Reorder the terms:
-75 + 3x2 = 12
Solving
-75 + 3x2 = 12
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '75' to each side of the equation.
-75 + 75 + 3x2 = 12 + 75
Combine like terms: -75 + 75 = 0
0 + 3x2 = 12 + 75
3x2 = 12 + 75
Combine like terms: 12 + 75 = 87
3x2 = 87
Divide each side by '3'.
x2 = 29
Simplifying
x2 = 29
Take the square root of each side:
x = {-5.385164807, 5.385164807}
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