3x^2-22x+84=0

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Solution for 3x^2-22x+84=0 equation:


Simplifying
3x2 + -22x + 84 = 0

Reorder the terms:
84 + -22x + 3x2 = 0

Solving
84 + -22x + 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'.
28 + -7.333333333x + x2 = 0

Move the constant term to the right:

Add '-28' to each side of the equation.
28 + -7.333333333x + -28 + x2 = 0 + -28

Reorder the terms:
28 + -28 + -7.333333333x + x2 = 0 + -28

Combine like terms: 28 + -28 = 0
0 + -7.333333333x + x2 = 0 + -28
-7.333333333x + x2 = 0 + -28

Combine like terms: 0 + -28 = -28
-7.333333333x + x2 = -28

The x term is -7.333333333x.  Take half its coefficient (-3.666666667).
Square it (13.44444445) and add it to both sides.

Add '13.44444445' to each side of the equation.
-7.333333333x + 13.44444445 + x2 = -28 + 13.44444445

Reorder the terms:
13.44444445 + -7.333333333x + x2 = -28 + 13.44444445

Combine like terms: -28 + 13.44444445 = -14.55555555
13.44444445 + -7.333333333x + x2 = -14.55555555

Factor a perfect square on the left side:
(x + -3.666666667)(x + -3.666666667) = -14.55555555

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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