9x^2-64x+4=0

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Solution for 9x^2-64x+4=0 equation:


Simplifying
9x2 + -64x + 4 = 0

Reorder the terms:
4 + -64x + 9x2 = 0

Solving
4 + -64x + 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'.
0.4444444444 + -7.111111111x + x2 = 0

Move the constant term to the right:

Add '-0.4444444444' to each side of the equation.
0.4444444444 + -7.111111111x + -0.4444444444 + x2 = 0 + -0.4444444444

Reorder the terms:
0.4444444444 + -0.4444444444 + -7.111111111x + x2 = 0 + -0.4444444444

Combine like terms: 0.4444444444 + -0.4444444444 = 0.0000000000
0.0000000000 + -7.111111111x + x2 = 0 + -0.4444444444
-7.111111111x + x2 = 0 + -0.4444444444

Combine like terms: 0 + -0.4444444444 = -0.4444444444
-7.111111111x + x2 = -0.4444444444

The x term is -7.111111111x.  Take half its coefficient (-3.555555556).
Square it (12.64197531) and add it to both sides.

Add '12.64197531' to each side of the equation.
-7.111111111x + 12.64197531 + x2 = -0.4444444444 + 12.64197531

Reorder the terms:
12.64197531 + -7.111111111x + x2 = -0.4444444444 + 12.64197531

Combine like terms: -0.4444444444 + 12.64197531 = 12.1975308656
12.64197531 + -7.111111111x + x2 = 12.1975308656

Factor a perfect square on the left side:
(x + -3.555555556)(x + -3.555555556) = 12.1975308656

Calculate the square root of the right side: 3.492496366

Break this problem into two subproblems by setting 
(x + -3.555555556) equal to 3.492496366 and -3.492496366.

Subproblem 1

x + -3.555555556 = 3.492496366 Simplifying x + -3.555555556 = 3.492496366 Reorder the terms: -3.555555556 + x = 3.492496366 Solving -3.555555556 + x = 3.492496366 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.555555556' to each side of the equation. -3.555555556 + 3.555555556 + x = 3.492496366 + 3.555555556 Combine like terms: -3.555555556 + 3.555555556 = 0.000000000 0.000000000 + x = 3.492496366 + 3.555555556 x = 3.492496366 + 3.555555556 Combine like terms: 3.492496366 + 3.555555556 = 7.048051922 x = 7.048051922 Simplifying x = 7.048051922

Subproblem 2

x + -3.555555556 = -3.492496366 Simplifying x + -3.555555556 = -3.492496366 Reorder the terms: -3.555555556 + x = -3.492496366 Solving -3.555555556 + x = -3.492496366 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.555555556' to each side of the equation. -3.555555556 + 3.555555556 + x = -3.492496366 + 3.555555556 Combine like terms: -3.555555556 + 3.555555556 = 0.000000000 0.000000000 + x = -3.492496366 + 3.555555556 x = -3.492496366 + 3.555555556 Combine like terms: -3.492496366 + 3.555555556 = 0.06305919 x = 0.06305919 Simplifying x = 0.06305919

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.048051922, 0.06305919}

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