21x^2-22x+10=0

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Solution for 21x^2-22x+10=0 equation:


Simplifying
21x2 + -22x + 10 = 0

Reorder the terms:
10 + -22x + 21x2 = 0

Solving
10 + -22x + 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'.
0.4761904762 + -1.047619048x + x2 = 0

Move the constant term to the right:

Add '-0.4761904762' to each side of the equation.
0.4761904762 + -1.047619048x + -0.4761904762 + x2 = 0 + -0.4761904762

Reorder the terms:
0.4761904762 + -0.4761904762 + -1.047619048x + x2 = 0 + -0.4761904762

Combine like terms: 0.4761904762 + -0.4761904762 = 0.0000000000
0.0000000000 + -1.047619048x + x2 = 0 + -0.4761904762
-1.047619048x + x2 = 0 + -0.4761904762

Combine like terms: 0 + -0.4761904762 = -0.4761904762
-1.047619048x + x2 = -0.4761904762

The x term is -1.047619048x.  Take half its coefficient (-0.523809524).
Square it (0.2743764174) and add it to both sides.

Add '0.2743764174' to each side of the equation.
-1.047619048x + 0.2743764174 + x2 = -0.4761904762 + 0.2743764174

Reorder the terms:
0.2743764174 + -1.047619048x + x2 = -0.4761904762 + 0.2743764174

Combine like terms: -0.4761904762 + 0.2743764174 = -0.2018140588
0.2743764174 + -1.047619048x + x2 = -0.2018140588

Factor a perfect square on the left side:
(x + -0.523809524)(x + -0.523809524) = -0.2018140588

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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