3x^2-10x+240=0

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Solution for 3x^2-10x+240=0 equation:


Simplifying
3x2 + -10x + 240 = 0

Reorder the terms:
240 + -10x + 3x2 = 0

Solving
240 + -10x + 3x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
3 the coefficient of the squared term: 

Divide each side by '3'.
80 + -3.333333333x + x2 = 0

Move the constant term to the right:

Add '-80' to each side of the equation.
80 + -3.333333333x + -80 + x2 = 0 + -80

Reorder the terms:
80 + -80 + -3.333333333x + x2 = 0 + -80

Combine like terms: 80 + -80 = 0
0 + -3.333333333x + x2 = 0 + -80
-3.333333333x + x2 = 0 + -80

Combine like terms: 0 + -80 = -80
-3.333333333x + x2 = -80

The x term is -3.333333333x.  Take half its coefficient (-1.666666667).
Square it (2.777777779) and add it to both sides.

Add '2.777777779' to each side of the equation.
-3.333333333x + 2.777777779 + x2 = -80 + 2.777777779

Reorder the terms:
2.777777779 + -3.333333333x + x2 = -80 + 2.777777779

Combine like terms: -80 + 2.777777779 = -77.222222221
2.777777779 + -3.333333333x + x2 = -77.222222221

Factor a perfect square on the left side:
(x + -1.666666667)(x + -1.666666667) = -77.222222221

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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