0=9x^2-62x-50

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Solution for 0=9x^2-62x-50 equation:


Simplifying
0 = 9x2 + -62x + -50

Reorder the terms:
0 = -50 + -62x + 9x2

Solving
0 = -50 + -62x + 9x2

Solving for variable 'x'.

Combine like terms: 0 + 50 = 50
50 + 62x + -9x2 = -50 + -62x + 9x2 + 50 + 62x + -9x2

Reorder the terms:
50 + 62x + -9x2 = -50 + 50 + -62x + 62x + 9x2 + -9x2

Combine like terms: -50 + 50 = 0
50 + 62x + -9x2 = 0 + -62x + 62x + 9x2 + -9x2
50 + 62x + -9x2 = -62x + 62x + 9x2 + -9x2

Combine like terms: -62x + 62x = 0
50 + 62x + -9x2 = 0 + 9x2 + -9x2
50 + 62x + -9x2 = 9x2 + -9x2

Combine like terms: 9x2 + -9x2 = 0
50 + 62x + -9x2 = 0

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

Divide each side by '-9'.
-5.555555556 + -6.888888889x + x2 = 0

Move the constant term to the right:

Add '5.555555556' to each side of the equation.
-5.555555556 + -6.888888889x + 5.555555556 + x2 = 0 + 5.555555556

Reorder the terms:
-5.555555556 + 5.555555556 + -6.888888889x + x2 = 0 + 5.555555556

Combine like terms: -5.555555556 + 5.555555556 = 0.000000000
0.000000000 + -6.888888889x + x2 = 0 + 5.555555556
-6.888888889x + x2 = 0 + 5.555555556

Combine like terms: 0 + 5.555555556 = 5.555555556
-6.888888889x + x2 = 5.555555556

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 = 5.555555556 + 11.86419753

Reorder the terms:
11.86419753 + -6.888888889x + x2 = 5.555555556 + 11.86419753

Combine like terms: 5.555555556 + 11.86419753 = 17.419753086
11.86419753 + -6.888888889x + x2 = 17.419753086

Factor a perfect square on the left side:
(x + -3.444444445)(x + -3.444444445) = 17.419753086

Calculate the square root of the right side: 4.173697771

Break this problem into two subproblems by setting 
(x + -3.444444445) equal to 4.173697771 and -4.173697771.

Subproblem 1

x + -3.444444445 = 4.173697771 Simplifying x + -3.444444445 = 4.173697771 Reorder the terms: -3.444444445 + x = 4.173697771 Solving -3.444444445 + x = 4.173697771 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 = 4.173697771 + 3.444444445 Combine like terms: -3.444444445 + 3.444444445 = 0.000000000 0.000000000 + x = 4.173697771 + 3.444444445 x = 4.173697771 + 3.444444445 Combine like terms: 4.173697771 + 3.444444445 = 7.618142216 x = 7.618142216 Simplifying x = 7.618142216

Subproblem 2

x + -3.444444445 = -4.173697771 Simplifying x + -3.444444445 = -4.173697771 Reorder the terms: -3.444444445 + x = -4.173697771 Solving -3.444444445 + x = -4.173697771 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 = -4.173697771 + 3.444444445 Combine like terms: -3.444444445 + 3.444444445 = 0.000000000 0.000000000 + x = -4.173697771 + 3.444444445 x = -4.173697771 + 3.444444445 Combine like terms: -4.173697771 + 3.444444445 = -0.729253326 x = -0.729253326 Simplifying x = -0.729253326

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.618142216, -0.729253326}

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