9x^2-144x+64=0

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Solution for 9x^2-144x+64=0 equation:


Simplifying
9x2 + -144x + 64 = 0

Reorder the terms:
64 + -144x + 9x2 = 0

Solving
64 + -144x + 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'.
7.111111111 + -16x + x2 = 0

Move the constant term to the right:

Add '-7.111111111' to each side of the equation.
7.111111111 + -16x + -7.111111111 + x2 = 0 + -7.111111111

Reorder the terms:
7.111111111 + -7.111111111 + -16x + x2 = 0 + -7.111111111

Combine like terms: 7.111111111 + -7.111111111 = 0.000000000
0.000000000 + -16x + x2 = 0 + -7.111111111
-16x + x2 = 0 + -7.111111111

Combine like terms: 0 + -7.111111111 = -7.111111111
-16x + x2 = -7.111111111

The x term is -16x.  Take half its coefficient (-8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
-16x + 64 + x2 = -7.111111111 + 64

Reorder the terms:
64 + -16x + x2 = -7.111111111 + 64

Combine like terms: -7.111111111 + 64 = 56.888888889
64 + -16x + x2 = 56.888888889

Factor a perfect square on the left side:
(x + -8)(x + -8) = 56.888888889

Calculate the square root of the right side: 7.542472333

Break this problem into two subproblems by setting 
(x + -8) equal to 7.542472333 and -7.542472333.

Subproblem 1

x + -8 = 7.542472333 Simplifying x + -8 = 7.542472333 Reorder the terms: -8 + x = 7.542472333 Solving -8 + x = 7.542472333 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = 7.542472333 + 8 Combine like terms: -8 + 8 = 0 0 + x = 7.542472333 + 8 x = 7.542472333 + 8 Combine like terms: 7.542472333 + 8 = 15.542472333 x = 15.542472333 Simplifying x = 15.542472333

Subproblem 2

x + -8 = -7.542472333 Simplifying x + -8 = -7.542472333 Reorder the terms: -8 + x = -7.542472333 Solving -8 + x = -7.542472333 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = -7.542472333 + 8 Combine like terms: -8 + 8 = 0 0 + x = -7.542472333 + 8 x = -7.542472333 + 8 Combine like terms: -7.542472333 + 8 = 0.457527667 x = 0.457527667 Simplifying x = 0.457527667

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.542472333, 0.457527667}

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