-5x^2+14.1x-9.93=0

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Solution for -5x^2+14.1x-9.93=0 equation:


Simplifying
-5x2 + 14.1x + -9.93 = 0

Reorder the terms:
-9.93 + 14.1x + -5x2 = 0

Solving
-9.93 + 14.1x + -5x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-5 the coefficient of the squared term: 

Divide each side by '-5'.
1.986 + -2.82x + x2 = 0

Move the constant term to the right:

Add '-1.986' to each side of the equation.
1.986 + -2.82x + -1.986 + x2 = 0 + -1.986

Reorder the terms:
1.986 + -1.986 + -2.82x + x2 = 0 + -1.986

Combine like terms: 1.986 + -1.986 = 0.000
0.000 + -2.82x + x2 = 0 + -1.986
-2.82x + x2 = 0 + -1.986

Combine like terms: 0 + -1.986 = -1.986
-2.82x + x2 = -1.986

The x term is -2.82x.  Take half its coefficient (-1.41).
Square it (1.9881) and add it to both sides.

Add '1.9881' to each side of the equation.
-2.82x + 1.9881 + x2 = -1.986 + 1.9881

Reorder the terms:
1.9881 + -2.82x + x2 = -1.986 + 1.9881

Combine like terms: -1.986 + 1.9881 = 0.0021
1.9881 + -2.82x + x2 = 0.0021

Factor a perfect square on the left side:
(x + -1.41)(x + -1.41) = 0.0021

Calculate the square root of the right side: 0.045825757

Break this problem into two subproblems by setting 
(x + -1.41) equal to 0.045825757 and -0.045825757.

Subproblem 1

x + -1.41 = 0.045825757 Simplifying x + -1.41 = 0.045825757 Reorder the terms: -1.41 + x = 0.045825757 Solving -1.41 + x = 0.045825757 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.41' to each side of the equation. -1.41 + 1.41 + x = 0.045825757 + 1.41 Combine like terms: -1.41 + 1.41 = 0.00 0.00 + x = 0.045825757 + 1.41 x = 0.045825757 + 1.41 Combine like terms: 0.045825757 + 1.41 = 1.455825757 x = 1.455825757 Simplifying x = 1.455825757

Subproblem 2

x + -1.41 = -0.045825757 Simplifying x + -1.41 = -0.045825757 Reorder the terms: -1.41 + x = -0.045825757 Solving -1.41 + x = -0.045825757 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.41' to each side of the equation. -1.41 + 1.41 + x = -0.045825757 + 1.41 Combine like terms: -1.41 + 1.41 = 0.00 0.00 + x = -0.045825757 + 1.41 x = -0.045825757 + 1.41 Combine like terms: -0.045825757 + 1.41 = 1.364174243 x = 1.364174243 Simplifying x = 1.364174243

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.455825757, 1.364174243}

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