21x^2-32x+136=0

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Solution for 21x^2-32x+136=0 equation:


Simplifying
21x2 + -32x + 136 = 0

Reorder the terms:
136 + -32x + 21x2 = 0

Solving
136 + -32x + 21x2 = 0

Solving for variable 'x'.

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

Divide each side by '21'.
6.476190476 + -1.523809524x + x2 = 0

Move the constant term to the right:

Add '-6.476190476' to each side of the equation.
6.476190476 + -1.523809524x + -6.476190476 + x2 = 0 + -6.476190476

Reorder the terms:
6.476190476 + -6.476190476 + -1.523809524x + x2 = 0 + -6.476190476

Combine like terms: 6.476190476 + -6.476190476 = 0.000000000
0.000000000 + -1.523809524x + x2 = 0 + -6.476190476
-1.523809524x + x2 = 0 + -6.476190476

Combine like terms: 0 + -6.476190476 = -6.476190476
-1.523809524x + x2 = -6.476190476

The x term is -1.523809524x.  Take half its coefficient (-0.761904762).
Square it (0.5804988664) and add it to both sides.

Add '0.5804988664' to each side of the equation.
-1.523809524x + 0.5804988664 + x2 = -6.476190476 + 0.5804988664

Reorder the terms:
0.5804988664 + -1.523809524x + x2 = -6.476190476 + 0.5804988664

Combine like terms: -6.476190476 + 0.5804988664 = -5.8956916096
0.5804988664 + -1.523809524x + x2 = -5.8956916096

Factor a perfect square on the left side:
(x + -0.761904762)(x + -0.761904762) = -5.8956916096

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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