9x^2-62x+7=0

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Solution for 9x^2-62x+7=0 equation:


Simplifying
9x2 + -62x + 7 = 0

Reorder the terms:
7 + -62x + 9x2 = 0

Solving
7 + -62x + 9x2 = 0

Solving for variable 'x'.

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

Divide each side by '9'.
0.7777777778 + -6.888888889x + x2 = 0

Move the constant term to the right:

Add '-0.7777777778' to each side of the equation.
0.7777777778 + -6.888888889x + -0.7777777778 + x2 = 0 + -0.7777777778

Reorder the terms:
0.7777777778 + -0.7777777778 + -6.888888889x + x2 = 0 + -0.7777777778

Combine like terms: 0.7777777778 + -0.7777777778 = 0.0000000000
0.0000000000 + -6.888888889x + x2 = 0 + -0.7777777778
-6.888888889x + x2 = 0 + -0.7777777778

Combine like terms: 0 + -0.7777777778 = -0.7777777778
-6.888888889x + x2 = -0.7777777778

The x term is -6.888888889x.  Take half its coefficient (-3.444444445).
Square it (11.86419753) and add it to both sides.

Add '11.86419753' to each side of the equation.
-6.888888889x + 11.86419753 + x2 = -0.7777777778 + 11.86419753

Reorder the terms:
11.86419753 + -6.888888889x + x2 = -0.7777777778 + 11.86419753

Combine like terms: -0.7777777778 + 11.86419753 = 11.0864197522
11.86419753 + -6.888888889x + x2 = 11.0864197522

Factor a perfect square on the left side:
(x + -3.444444445)(x + -3.444444445) = 11.0864197522

Calculate the square root of the right side: 3.32962757

Break this problem into two subproblems by setting 
(x + -3.444444445) equal to 3.32962757 and -3.32962757.

Subproblem 1

x + -3.444444445 = 3.32962757 Simplifying x + -3.444444445 = 3.32962757 Reorder the terms: -3.444444445 + x = 3.32962757 Solving -3.444444445 + x = 3.32962757 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.444444445' to each side of the equation. -3.444444445 + 3.444444445 + x = 3.32962757 + 3.444444445 Combine like terms: -3.444444445 + 3.444444445 = 0.000000000 0.000000000 + x = 3.32962757 + 3.444444445 x = 3.32962757 + 3.444444445 Combine like terms: 3.32962757 + 3.444444445 = 6.774072015 x = 6.774072015 Simplifying x = 6.774072015

Subproblem 2

x + -3.444444445 = -3.32962757 Simplifying x + -3.444444445 = -3.32962757 Reorder the terms: -3.444444445 + x = -3.32962757 Solving -3.444444445 + x = -3.32962757 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.444444445' to each side of the equation. -3.444444445 + 3.444444445 + x = -3.32962757 + 3.444444445 Combine like terms: -3.444444445 + 3.444444445 = 0.000000000 0.000000000 + x = -3.32962757 + 3.444444445 x = -3.32962757 + 3.444444445 Combine like terms: -3.32962757 + 3.444444445 = 0.114816875 x = 0.114816875 Simplifying x = 0.114816875

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.774072015, 0.114816875}

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