7x^2-12x+7=0

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Solution for 7x^2-12x+7=0 equation:


Simplifying
7x2 + -12x + 7 = 0

Reorder the terms:
7 + -12x + 7x2 = 0

Solving
7 + -12x + 7x2 = 0

Solving for variable 'x'.

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

Divide each side by '7'.
1 + -1.714285714x + x2 = 0

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + -1.714285714x + -1 + x2 = 0 + -1

Reorder the terms:
1 + -1 + -1.714285714x + x2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -1.714285714x + x2 = 0 + -1
-1.714285714x + x2 = 0 + -1

Combine like terms: 0 + -1 = -1
-1.714285714x + x2 = -1

The x term is -1.714285714x.  Take half its coefficient (-0.857142857).
Square it (0.7346938773) and add it to both sides.

Add '0.7346938773' to each side of the equation.
-1.714285714x + 0.7346938773 + x2 = -1 + 0.7346938773

Reorder the terms:
0.7346938773 + -1.714285714x + x2 = -1 + 0.7346938773

Combine like terms: -1 + 0.7346938773 = -0.2653061227
0.7346938773 + -1.714285714x + x2 = -0.2653061227

Factor a perfect square on the left side:
(x + -0.857142857)(x + -0.857142857) = -0.2653061227

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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