9x^2-49x+68=x

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Solution for 9x^2-49x+68=x equation:


Simplifying
9x2 + -49x + 68 = x

Reorder the terms:
68 + -49x + 9x2 = x

Solving
68 + -49x + 9x2 = x

Solving for variable 'x'.

Reorder the terms:
68 + -49x + -1x + 9x2 = x + -1x

Combine like terms: -49x + -1x = -50x
68 + -50x + 9x2 = x + -1x

Combine like terms: x + -1x = 0
68 + -50x + 9x2 = 0

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

Divide each side by '9'.
7.555555556 + -5.555555556x + x2 = 0

Move the constant term to the right:

Add '-7.555555556' to each side of the equation.
7.555555556 + -5.555555556x + -7.555555556 + x2 = 0 + -7.555555556

Reorder the terms:
7.555555556 + -7.555555556 + -5.555555556x + x2 = 0 + -7.555555556

Combine like terms: 7.555555556 + -7.555555556 = 0.000000000
0.000000000 + -5.555555556x + x2 = 0 + -7.555555556
-5.555555556x + x2 = 0 + -7.555555556

Combine like terms: 0 + -7.555555556 = -7.555555556
-5.555555556x + x2 = -7.555555556

The x term is -5.555555556x.  Take half its coefficient (-2.777777778).
Square it (7.716049384) and add it to both sides.

Add '7.716049384' to each side of the equation.
-5.555555556x + 7.716049384 + x2 = -7.555555556 + 7.716049384

Reorder the terms:
7.716049384 + -5.555555556x + x2 = -7.555555556 + 7.716049384

Combine like terms: -7.555555556 + 7.716049384 = 0.160493828
7.716049384 + -5.555555556x + x2 = 0.160493828

Factor a perfect square on the left side:
(x + -2.777777778)(x + -2.777777778) = 0.160493828

Calculate the square root of the right side: 0.400616809

Break this problem into two subproblems by setting 
(x + -2.777777778) equal to 0.400616809 and -0.400616809.

Subproblem 1

x + -2.777777778 = 0.400616809 Simplifying x + -2.777777778 = 0.400616809 Reorder the terms: -2.777777778 + x = 0.400616809 Solving -2.777777778 + x = 0.400616809 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.777777778' to each side of the equation. -2.777777778 + 2.777777778 + x = 0.400616809 + 2.777777778 Combine like terms: -2.777777778 + 2.777777778 = 0.000000000 0.000000000 + x = 0.400616809 + 2.777777778 x = 0.400616809 + 2.777777778 Combine like terms: 0.400616809 + 2.777777778 = 3.178394587 x = 3.178394587 Simplifying x = 3.178394587

Subproblem 2

x + -2.777777778 = -0.400616809 Simplifying x + -2.777777778 = -0.400616809 Reorder the terms: -2.777777778 + x = -0.400616809 Solving -2.777777778 + x = -0.400616809 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.777777778' to each side of the equation. -2.777777778 + 2.777777778 + x = -0.400616809 + 2.777777778 Combine like terms: -2.777777778 + 2.777777778 = 0.000000000 0.000000000 + x = -0.400616809 + 2.777777778 x = -0.400616809 + 2.777777778 Combine like terms: -0.400616809 + 2.777777778 = 2.377160969 x = 2.377160969 Simplifying x = 2.377160969

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.178394587, 2.377160969}

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