3x^2-16x+99=0

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Solution for 3x^2-16x+99=0 equation:


Simplifying
3x2 + -16x + 99 = 0

Reorder the terms:
99 + -16x + 3x2 = 0

Solving
99 + -16x + 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'.
33 + -5.333333333x + x2 = 0

Move the constant term to the right:

Add '-33' to each side of the equation.
33 + -5.333333333x + -33 + x2 = 0 + -33

Reorder the terms:
33 + -33 + -5.333333333x + x2 = 0 + -33

Combine like terms: 33 + -33 = 0
0 + -5.333333333x + x2 = 0 + -33
-5.333333333x + x2 = 0 + -33

Combine like terms: 0 + -33 = -33
-5.333333333x + x2 = -33

The x term is -5.333333333x.  Take half its coefficient (-2.666666667).
Square it (7.111111113) and add it to both sides.

Add '7.111111113' to each side of the equation.
-5.333333333x + 7.111111113 + x2 = -33 + 7.111111113

Reorder the terms:
7.111111113 + -5.333333333x + x2 = -33 + 7.111111113

Combine like terms: -33 + 7.111111113 = -25.888888887
7.111111113 + -5.333333333x + x2 = -25.888888887

Factor a perfect square on the left side:
(x + -2.666666667)(x + -2.666666667) = -25.888888887

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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