20x^2-34x+11=0

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Solution for 20x^2-34x+11=0 equation:


Simplifying
20x2 + -34x + 11 = 0

Reorder the terms:
11 + -34x + 20x2 = 0

Solving
11 + -34x + 20x2 = 0

Solving for variable 'x'.

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

Divide each side by '20'.
0.55 + -1.7x + x2 = 0

Move the constant term to the right:

Add '-0.55' to each side of the equation.
0.55 + -1.7x + -0.55 + x2 = 0 + -0.55

Reorder the terms:
0.55 + -0.55 + -1.7x + x2 = 0 + -0.55

Combine like terms: 0.55 + -0.55 = 0.00
0.00 + -1.7x + x2 = 0 + -0.55
-1.7x + x2 = 0 + -0.55

Combine like terms: 0 + -0.55 = -0.55
-1.7x + x2 = -0.55

The x term is -1.7x.  Take half its coefficient (-0.85).
Square it (0.7225) and add it to both sides.

Add '0.7225' to each side of the equation.
-1.7x + 0.7225 + x2 = -0.55 + 0.7225

Reorder the terms:
0.7225 + -1.7x + x2 = -0.55 + 0.7225

Combine like terms: -0.55 + 0.7225 = 0.1725
0.7225 + -1.7x + x2 = 0.1725

Factor a perfect square on the left side:
(x + -0.85)(x + -0.85) = 0.1725

Calculate the square root of the right side: 0.415331193

Break this problem into two subproblems by setting 
(x + -0.85) equal to 0.415331193 and -0.415331193.

Subproblem 1

x + -0.85 = 0.415331193 Simplifying x + -0.85 = 0.415331193 Reorder the terms: -0.85 + x = 0.415331193 Solving -0.85 + x = 0.415331193 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.85' to each side of the equation. -0.85 + 0.85 + x = 0.415331193 + 0.85 Combine like terms: -0.85 + 0.85 = 0.00 0.00 + x = 0.415331193 + 0.85 x = 0.415331193 + 0.85 Combine like terms: 0.415331193 + 0.85 = 1.265331193 x = 1.265331193 Simplifying x = 1.265331193

Subproblem 2

x + -0.85 = -0.415331193 Simplifying x + -0.85 = -0.415331193 Reorder the terms: -0.85 + x = -0.415331193 Solving -0.85 + x = -0.415331193 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.85' to each side of the equation. -0.85 + 0.85 + x = -0.415331193 + 0.85 Combine like terms: -0.85 + 0.85 = 0.00 0.00 + x = -0.415331193 + 0.85 x = -0.415331193 + 0.85 Combine like terms: -0.415331193 + 0.85 = 0.434668807 x = 0.434668807 Simplifying x = 0.434668807

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.265331193, 0.434668807}

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