(-20x^2)+19x+2=0

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Solution for (-20x^2)+19x+2=0 equation:


Simplifying
(-20x2) + 19x + 2 = 0

Reorder the terms:
2 + 19x + (-20x2) = 0

Solving
2 + 19x + (-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'.
-0.1 + -0.95x + x2 = 0

Move the constant term to the right:

Add '0.1' to each side of the equation.
-0.1 + -0.95x + 0.1 + x2 = 0 + 0.1

Reorder the terms:
-0.1 + 0.1 + -0.95x + x2 = 0 + 0.1

Combine like terms: -0.1 + 0.1 = 0.0
0.0 + -0.95x + x2 = 0 + 0.1
-0.95x + x2 = 0 + 0.1

Combine like terms: 0 + 0.1 = 0.1
-0.95x + x2 = 0.1

The x term is -0.95x.  Take half its coefficient (-0.475).
Square it (0.225625) and add it to both sides.

Add '0.225625' to each side of the equation.
-0.95x + 0.225625 + x2 = 0.1 + 0.225625

Reorder the terms:
0.225625 + -0.95x + x2 = 0.1 + 0.225625

Combine like terms: 0.1 + 0.225625 = 0.325625
0.225625 + -0.95x + x2 = 0.325625

Factor a perfect square on the left side:
((x) + -0.475)((x) + -0.475) = 0.325625

Calculate the square root of the right side: 0.570635611

Break this problem into two subproblems by setting 
((x) + -0.475) equal to 0.570635611 and -0.570635611.

Subproblem 1

(x) + -0.475 = 0.570635611 Simplifying (x) + -0.475 = 0.570635611 x + -0.475 = 0.570635611 Reorder the terms: -0.475 + x = 0.570635611 Solving -0.475 + x = 0.570635611 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.475' to each side of the equation. -0.475 + 0.475 + x = 0.570635611 + 0.475 Combine like terms: -0.475 + 0.475 = 0.000 0.000 + x = 0.570635611 + 0.475 x = 0.570635611 + 0.475 Combine like terms: 0.570635611 + 0.475 = 1.045635611 x = 1.045635611 Simplifying x = 1.045635611

Subproblem 2

(x) + -0.475 = -0.570635611 Simplifying (x) + -0.475 = -0.570635611 x + -0.475 = -0.570635611 Reorder the terms: -0.475 + x = -0.570635611 Solving -0.475 + x = -0.570635611 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.475' to each side of the equation. -0.475 + 0.475 + x = -0.570635611 + 0.475 Combine like terms: -0.475 + 0.475 = 0.000 0.000 + x = -0.570635611 + 0.475 x = -0.570635611 + 0.475 Combine like terms: -0.570635611 + 0.475 = -0.095635611 x = -0.095635611 Simplifying x = -0.095635611

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.045635611, -0.095635611}

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