9*x^2-170*x+578=0

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Solution for 9*x^2-170*x+578=0 equation:


Simplifying
9x2 + -170x + 578 = 0

Reorder the terms:
578 + -170x + 9x2 = 0

Solving
578 + -170x + 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'.
64.22222222 + -18.88888889x + x2 = 0

Move the constant term to the right:

Add '-64.22222222' to each side of the equation.
64.22222222 + -18.88888889x + -64.22222222 + x2 = 0 + -64.22222222

Reorder the terms:
64.22222222 + -64.22222222 + -18.88888889x + x2 = 0 + -64.22222222

Combine like terms: 64.22222222 + -64.22222222 = 0.00000000
0.00000000 + -18.88888889x + x2 = 0 + -64.22222222
-18.88888889x + x2 = 0 + -64.22222222

Combine like terms: 0 + -64.22222222 = -64.22222222
-18.88888889x + x2 = -64.22222222

The x term is -18.88888889x.  Take half its coefficient (-9.444444445).
Square it (89.19753087) and add it to both sides.

Add '89.19753087' to each side of the equation.
-18.88888889x + 89.19753087 + x2 = -64.22222222 + 89.19753087

Reorder the terms:
89.19753087 + -18.88888889x + x2 = -64.22222222 + 89.19753087

Combine like terms: -64.22222222 + 89.19753087 = 24.97530865
89.19753087 + -18.88888889x + x2 = 24.97530865

Factor a perfect square on the left side:
(x + -9.444444445)(x + -9.444444445) = 24.97530865

Calculate the square root of the right side: 4.997530255

Break this problem into two subproblems by setting 
(x + -9.444444445) equal to 4.997530255 and -4.997530255.

Subproblem 1

x + -9.444444445 = 4.997530255 Simplifying x + -9.444444445 = 4.997530255 Reorder the terms: -9.444444445 + x = 4.997530255 Solving -9.444444445 + x = 4.997530255 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.444444445' to each side of the equation. -9.444444445 + 9.444444445 + x = 4.997530255 + 9.444444445 Combine like terms: -9.444444445 + 9.444444445 = 0.000000000 0.000000000 + x = 4.997530255 + 9.444444445 x = 4.997530255 + 9.444444445 Combine like terms: 4.997530255 + 9.444444445 = 14.4419747 x = 14.4419747 Simplifying x = 14.4419747

Subproblem 2

x + -9.444444445 = -4.997530255 Simplifying x + -9.444444445 = -4.997530255 Reorder the terms: -9.444444445 + x = -4.997530255 Solving -9.444444445 + x = -4.997530255 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.444444445' to each side of the equation. -9.444444445 + 9.444444445 + x = -4.997530255 + 9.444444445 Combine like terms: -9.444444445 + 9.444444445 = 0.000000000 0.000000000 + x = -4.997530255 + 9.444444445 x = -4.997530255 + 9.444444445 Combine like terms: -4.997530255 + 9.444444445 = 4.44691419 x = 4.44691419 Simplifying x = 4.44691419

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.4419747, 4.44691419}

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