9x^2-113x+306=0

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Solution for 9x^2-113x+306=0 equation:


Simplifying
9x2 + -113x + 306 = 0

Reorder the terms:
306 + -113x + 9x2 = 0

Solving
306 + -113x + 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'.
34 + -12.55555556x + x2 = 0

Move the constant term to the right:

Add '-34' to each side of the equation.
34 + -12.55555556x + -34 + x2 = 0 + -34

Reorder the terms:
34 + -34 + -12.55555556x + x2 = 0 + -34

Combine like terms: 34 + -34 = 0
0 + -12.55555556x + x2 = 0 + -34
-12.55555556x + x2 = 0 + -34

Combine like terms: 0 + -34 = -34
-12.55555556x + x2 = -34

The x term is -12.55555556x.  Take half its coefficient (-6.27777778).
Square it (39.41049386) and add it to both sides.

Add '39.41049386' to each side of the equation.
-12.55555556x + 39.41049386 + x2 = -34 + 39.41049386

Reorder the terms:
39.41049386 + -12.55555556x + x2 = -34 + 39.41049386

Combine like terms: -34 + 39.41049386 = 5.41049386
39.41049386 + -12.55555556x + x2 = 5.41049386

Factor a perfect square on the left side:
(x + -6.27777778)(x + -6.27777778) = 5.41049386

Calculate the square root of the right side: 2.326046831

Break this problem into two subproblems by setting 
(x + -6.27777778) equal to 2.326046831 and -2.326046831.

Subproblem 1

x + -6.27777778 = 2.326046831 Simplifying x + -6.27777778 = 2.326046831 Reorder the terms: -6.27777778 + x = 2.326046831 Solving -6.27777778 + x = 2.326046831 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.27777778' to each side of the equation. -6.27777778 + 6.27777778 + x = 2.326046831 + 6.27777778 Combine like terms: -6.27777778 + 6.27777778 = 0.00000000 0.00000000 + x = 2.326046831 + 6.27777778 x = 2.326046831 + 6.27777778 Combine like terms: 2.326046831 + 6.27777778 = 8.603824611 x = 8.603824611 Simplifying x = 8.603824611

Subproblem 2

x + -6.27777778 = -2.326046831 Simplifying x + -6.27777778 = -2.326046831 Reorder the terms: -6.27777778 + x = -2.326046831 Solving -6.27777778 + x = -2.326046831 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.27777778' to each side of the equation. -6.27777778 + 6.27777778 + x = -2.326046831 + 6.27777778 Combine like terms: -6.27777778 + 6.27777778 = 0.00000000 0.00000000 + x = -2.326046831 + 6.27777778 x = -2.326046831 + 6.27777778 Combine like terms: -2.326046831 + 6.27777778 = 3.951730949 x = 3.951730949 Simplifying x = 3.951730949

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.603824611, 3.951730949}

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