8x^2-34x+13=0

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Solution for 8x^2-34x+13=0 equation:


Simplifying
8x2 + -34x + 13 = 0

Reorder the terms:
13 + -34x + 8x2 = 0

Solving
13 + -34x + 8x2 = 0

Solving for variable 'x'.

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

Divide each side by '8'.
1.625 + -4.25x + x2 = 0

Move the constant term to the right:

Add '-1.625' to each side of the equation.
1.625 + -4.25x + -1.625 + x2 = 0 + -1.625

Reorder the terms:
1.625 + -1.625 + -4.25x + x2 = 0 + -1.625

Combine like terms: 1.625 + -1.625 = 0.000
0.000 + -4.25x + x2 = 0 + -1.625
-4.25x + x2 = 0 + -1.625

Combine like terms: 0 + -1.625 = -1.625
-4.25x + x2 = -1.625

The x term is -4.25x.  Take half its coefficient (-2.125).
Square it (4.515625) and add it to both sides.

Add '4.515625' to each side of the equation.
-4.25x + 4.515625 + x2 = -1.625 + 4.515625

Reorder the terms:
4.515625 + -4.25x + x2 = -1.625 + 4.515625

Combine like terms: -1.625 + 4.515625 = 2.890625
4.515625 + -4.25x + x2 = 2.890625

Factor a perfect square on the left side:
(x + -2.125)(x + -2.125) = 2.890625

Calculate the square root of the right side: 1.700183814

Break this problem into two subproblems by setting 
(x + -2.125) equal to 1.700183814 and -1.700183814.

Subproblem 1

x + -2.125 = 1.700183814 Simplifying x + -2.125 = 1.700183814 Reorder the terms: -2.125 + x = 1.700183814 Solving -2.125 + x = 1.700183814 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.125' to each side of the equation. -2.125 + 2.125 + x = 1.700183814 + 2.125 Combine like terms: -2.125 + 2.125 = 0.000 0.000 + x = 1.700183814 + 2.125 x = 1.700183814 + 2.125 Combine like terms: 1.700183814 + 2.125 = 3.825183814 x = 3.825183814 Simplifying x = 3.825183814

Subproblem 2

x + -2.125 = -1.700183814 Simplifying x + -2.125 = -1.700183814 Reorder the terms: -2.125 + x = -1.700183814 Solving -2.125 + x = -1.700183814 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.125' to each side of the equation. -2.125 + 2.125 + x = -1.700183814 + 2.125 Combine like terms: -2.125 + 2.125 = 0.000 0.000 + x = -1.700183814 + 2.125 x = -1.700183814 + 2.125 Combine like terms: -1.700183814 + 2.125 = 0.424816186 x = 0.424816186 Simplifying x = 0.424816186

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.825183814, 0.424816186}

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