x^2-8.5x+3=0

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Solution for x^2-8.5x+3=0 equation:


Simplifying
x2 + -8.5x + 3 = 0

Reorder the terms:
3 + -8.5x + x2 = 0

Solving
3 + -8.5x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-3' to each side of the equation.
3 + -8.5x + -3 + x2 = 0 + -3

Reorder the terms:
3 + -3 + -8.5x + x2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -8.5x + x2 = 0 + -3
-8.5x + x2 = 0 + -3

Combine like terms: 0 + -3 = -3
-8.5x + x2 = -3

The x term is -8.5x.  Take half its coefficient (-4.25).
Square it (18.0625) and add it to both sides.

Add '18.0625' to each side of the equation.
-8.5x + 18.0625 + x2 = -3 + 18.0625

Reorder the terms:
18.0625 + -8.5x + x2 = -3 + 18.0625

Combine like terms: -3 + 18.0625 = 15.0625
18.0625 + -8.5x + x2 = 15.0625

Factor a perfect square on the left side:
(x + -4.25)(x + -4.25) = 15.0625

Calculate the square root of the right side: 3.881043674

Break this problem into two subproblems by setting 
(x + -4.25) equal to 3.881043674 and -3.881043674.

Subproblem 1

x + -4.25 = 3.881043674 Simplifying x + -4.25 = 3.881043674 Reorder the terms: -4.25 + x = 3.881043674 Solving -4.25 + x = 3.881043674 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.25' to each side of the equation. -4.25 + 4.25 + x = 3.881043674 + 4.25 Combine like terms: -4.25 + 4.25 = 0.00 0.00 + x = 3.881043674 + 4.25 x = 3.881043674 + 4.25 Combine like terms: 3.881043674 + 4.25 = 8.131043674 x = 8.131043674 Simplifying x = 8.131043674

Subproblem 2

x + -4.25 = -3.881043674 Simplifying x + -4.25 = -3.881043674 Reorder the terms: -4.25 + x = -3.881043674 Solving -4.25 + x = -3.881043674 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.25' to each side of the equation. -4.25 + 4.25 + x = -3.881043674 + 4.25 Combine like terms: -4.25 + 4.25 = 0.00 0.00 + x = -3.881043674 + 4.25 x = -3.881043674 + 4.25 Combine like terms: -3.881043674 + 4.25 = 0.368956326 x = 0.368956326 Simplifying x = 0.368956326

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.131043674, 0.368956326}

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