0.1x^2-2x+3=0

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Solution for 0.1x^2-2x+3=0 equation:


Simplifying
0.1x2 + -2x + 3 = 0

Reorder the terms:
3 + -2x + 0.1x2 = 0

Solving
3 + -2x + 0.1x2 = 0

Solving for variable 'x'.

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

Divide each side by '0.1'.
30 + -20x + x2 = 0

Move the constant term to the right:

Add '-30' to each side of the equation.
30 + -20x + -30 + x2 = 0 + -30

Reorder the terms:
30 + -30 + -20x + x2 = 0 + -30

Combine like terms: 30 + -30 = 0
0 + -20x + x2 = 0 + -30
-20x + x2 = 0 + -30

Combine like terms: 0 + -30 = -30
-20x + x2 = -30

The x term is -20x.  Take half its coefficient (-10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
-20x + 100 + x2 = -30 + 100

Reorder the terms:
100 + -20x + x2 = -30 + 100

Combine like terms: -30 + 100 = 70
100 + -20x + x2 = 70

Factor a perfect square on the left side:
(x + -10)(x + -10) = 70

Calculate the square root of the right side: 8.366600265

Break this problem into two subproblems by setting 
(x + -10) equal to 8.366600265 and -8.366600265.

Subproblem 1

x + -10 = 8.366600265 Simplifying x + -10 = 8.366600265 Reorder the terms: -10 + x = 8.366600265 Solving -10 + x = 8.366600265 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + x = 8.366600265 + 10 Combine like terms: -10 + 10 = 0 0 + x = 8.366600265 + 10 x = 8.366600265 + 10 Combine like terms: 8.366600265 + 10 = 18.366600265 x = 18.366600265 Simplifying x = 18.366600265

Subproblem 2

x + -10 = -8.366600265 Simplifying x + -10 = -8.366600265 Reorder the terms: -10 + x = -8.366600265 Solving -10 + x = -8.366600265 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + x = -8.366600265 + 10 Combine like terms: -10 + 10 = 0 0 + x = -8.366600265 + 10 x = -8.366600265 + 10 Combine like terms: -8.366600265 + 10 = 1.633399735 x = 1.633399735 Simplifying x = 1.633399735

Solution

The solution to the problem is based on the solutions from the subproblems. x = {18.366600265, 1.633399735}

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