10x^2+19x+3=0

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Solution for 10x^2+19x+3=0 equation:


Simplifying
10x2 + 19x + 3 = 0

Reorder the terms:
3 + 19x + 10x2 = 0

Solving
3 + 19x + 10x2 = 0

Solving for variable 'x'.

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

Divide each side by '10'.
0.3 + 1.9x + x2 = 0

Move the constant term to the right:

Add '-0.3' to each side of the equation.
0.3 + 1.9x + -0.3 + x2 = 0 + -0.3

Reorder the terms:
0.3 + -0.3 + 1.9x + x2 = 0 + -0.3

Combine like terms: 0.3 + -0.3 = 0.0
0.0 + 1.9x + x2 = 0 + -0.3
1.9x + x2 = 0 + -0.3

Combine like terms: 0 + -0.3 = -0.3
1.9x + x2 = -0.3

The x term is 1.9x.  Take half its coefficient (0.95).
Square it (0.9025) and add it to both sides.

Add '0.9025' to each side of the equation.
1.9x + 0.9025 + x2 = -0.3 + 0.9025

Reorder the terms:
0.9025 + 1.9x + x2 = -0.3 + 0.9025

Combine like terms: -0.3 + 0.9025 = 0.6025
0.9025 + 1.9x + x2 = 0.6025

Factor a perfect square on the left side:
(x + 0.95)(x + 0.95) = 0.6025

Calculate the square root of the right side: 0.776208735

Break this problem into two subproblems by setting 
(x + 0.95) equal to 0.776208735 and -0.776208735.

Subproblem 1

x + 0.95 = 0.776208735 Simplifying x + 0.95 = 0.776208735 Reorder the terms: 0.95 + x = 0.776208735 Solving 0.95 + x = 0.776208735 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.95' to each side of the equation. 0.95 + -0.95 + x = 0.776208735 + -0.95 Combine like terms: 0.95 + -0.95 = 0.00 0.00 + x = 0.776208735 + -0.95 x = 0.776208735 + -0.95 Combine like terms: 0.776208735 + -0.95 = -0.173791265 x = -0.173791265 Simplifying x = -0.173791265

Subproblem 2

x + 0.95 = -0.776208735 Simplifying x + 0.95 = -0.776208735 Reorder the terms: 0.95 + x = -0.776208735 Solving 0.95 + x = -0.776208735 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.95' to each side of the equation. 0.95 + -0.95 + x = -0.776208735 + -0.95 Combine like terms: 0.95 + -0.95 = 0.00 0.00 + x = -0.776208735 + -0.95 x = -0.776208735 + -0.95 Combine like terms: -0.776208735 + -0.95 = -1.726208735 x = -1.726208735 Simplifying x = -1.726208735

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.173791265, -1.726208735}

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