20x^2-174x+35=0

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Solution for 20x^2-174x+35=0 equation:


Simplifying
20x2 + -174x + 35 = 0

Reorder the terms:
35 + -174x + 20x2 = 0

Solving
35 + -174x + 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'.
1.75 + -8.7x + x2 = 0

Move the constant term to the right:

Add '-1.75' to each side of the equation.
1.75 + -8.7x + -1.75 + x2 = 0 + -1.75

Reorder the terms:
1.75 + -1.75 + -8.7x + x2 = 0 + -1.75

Combine like terms: 1.75 + -1.75 = 0.00
0.00 + -8.7x + x2 = 0 + -1.75
-8.7x + x2 = 0 + -1.75

Combine like terms: 0 + -1.75 = -1.75
-8.7x + x2 = -1.75

The x term is -8.7x.  Take half its coefficient (-4.35).
Square it (18.9225) and add it to both sides.

Add '18.9225' to each side of the equation.
-8.7x + 18.9225 + x2 = -1.75 + 18.9225

Reorder the terms:
18.9225 + -8.7x + x2 = -1.75 + 18.9225

Combine like terms: -1.75 + 18.9225 = 17.1725
18.9225 + -8.7x + x2 = 17.1725

Factor a perfect square on the left side:
(x + -4.35)(x + -4.35) = 17.1725

Calculate the square root of the right side: 4.143971525

Break this problem into two subproblems by setting 
(x + -4.35) equal to 4.143971525 and -4.143971525.

Subproblem 1

x + -4.35 = 4.143971525 Simplifying x + -4.35 = 4.143971525 Reorder the terms: -4.35 + x = 4.143971525 Solving -4.35 + x = 4.143971525 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.35' to each side of the equation. -4.35 + 4.35 + x = 4.143971525 + 4.35 Combine like terms: -4.35 + 4.35 = 0.00 0.00 + x = 4.143971525 + 4.35 x = 4.143971525 + 4.35 Combine like terms: 4.143971525 + 4.35 = 8.493971525 x = 8.493971525 Simplifying x = 8.493971525

Subproblem 2

x + -4.35 = -4.143971525 Simplifying x + -4.35 = -4.143971525 Reorder the terms: -4.35 + x = -4.143971525 Solving -4.35 + x = -4.143971525 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.35' to each side of the equation. -4.35 + 4.35 + x = -4.143971525 + 4.35 Combine like terms: -4.35 + 4.35 = 0.00 0.00 + x = -4.143971525 + 4.35 x = -4.143971525 + 4.35 Combine like terms: -4.143971525 + 4.35 = 0.206028475 x = 0.206028475 Simplifying x = 0.206028475

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.493971525, 0.206028475}

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