9x^2-15x+14x-9=0

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Solution for 9x^2-15x+14x-9=0 equation:


Simplifying
9x2 + -15x + 14x + -9 = 0

Reorder the terms:
-9 + -15x + 14x + 9x2 = 0

Combine like terms: -15x + 14x = -1x
-9 + -1x + 9x2 = 0

Solving
-9 + -1x + 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'.
-1 + -0.1111111111x + x2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -0.1111111111x + 1 + x2 = 0 + 1

Reorder the terms:
-1 + 1 + -0.1111111111x + x2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -0.1111111111x + x2 = 0 + 1
-0.1111111111x + x2 = 0 + 1

Combine like terms: 0 + 1 = 1
-0.1111111111x + x2 = 1

The x term is -0.1111111111x.  Take half its coefficient (-0.05555555555).
Square it (0.003086419752) and add it to both sides.

Add '0.003086419752' to each side of the equation.
-0.1111111111x + 0.003086419752 + x2 = 1 + 0.003086419752

Reorder the terms:
0.003086419752 + -0.1111111111x + x2 = 1 + 0.003086419752

Combine like terms: 1 + 0.003086419752 = 1.003086419752
0.003086419752 + -0.1111111111x + x2 = 1.003086419752

Factor a perfect square on the left side:
(x + -0.05555555555)(x + -0.05555555555) = 1.003086419752

Calculate the square root of the right side: 1.001542021

Break this problem into two subproblems by setting 
(x + -0.05555555555) equal to 1.001542021 and -1.001542021.

Subproblem 1

x + -0.05555555555 = 1.001542021 Simplifying x + -0.05555555555 = 1.001542021 Reorder the terms: -0.05555555555 + x = 1.001542021 Solving -0.05555555555 + x = 1.001542021 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.05555555555' to each side of the equation. -0.05555555555 + 0.05555555555 + x = 1.001542021 + 0.05555555555 Combine like terms: -0.05555555555 + 0.05555555555 = 0.00000000000 0.00000000000 + x = 1.001542021 + 0.05555555555 x = 1.001542021 + 0.05555555555 Combine like terms: 1.001542021 + 0.05555555555 = 1.05709757655 x = 1.05709757655 Simplifying x = 1.05709757655

Subproblem 2

x + -0.05555555555 = -1.001542021 Simplifying x + -0.05555555555 = -1.001542021 Reorder the terms: -0.05555555555 + x = -1.001542021 Solving -0.05555555555 + x = -1.001542021 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.05555555555' to each side of the equation. -0.05555555555 + 0.05555555555 + x = -1.001542021 + 0.05555555555 Combine like terms: -0.05555555555 + 0.05555555555 = 0.00000000000 0.00000000000 + x = -1.001542021 + 0.05555555555 x = -1.001542021 + 0.05555555555 Combine like terms: -1.001542021 + 0.05555555555 = -0.94598646545 x = -0.94598646545 Simplifying x = -0.94598646545

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.05709757655, -0.94598646545}

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