2x^2+19x-6.3=0

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Solution for 2x^2+19x-6.3=0 equation:


Simplifying
2x2 + 19x + -6.3 = 0

Reorder the terms:
-6.3 + 19x + 2x2 = 0

Solving
-6.3 + 19x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-3.15 + 9.5x + x2 = 0

Move the constant term to the right:

Add '3.15' to each side of the equation.
-3.15 + 9.5x + 3.15 + x2 = 0 + 3.15

Reorder the terms:
-3.15 + 3.15 + 9.5x + x2 = 0 + 3.15

Combine like terms: -3.15 + 3.15 = 0.00
0.00 + 9.5x + x2 = 0 + 3.15
9.5x + x2 = 0 + 3.15

Combine like terms: 0 + 3.15 = 3.15
9.5x + x2 = 3.15

The x term is 9.5x.  Take half its coefficient (4.75).
Square it (22.5625) and add it to both sides.

Add '22.5625' to each side of the equation.
9.5x + 22.5625 + x2 = 3.15 + 22.5625

Reorder the terms:
22.5625 + 9.5x + x2 = 3.15 + 22.5625

Combine like terms: 3.15 + 22.5625 = 25.7125
22.5625 + 9.5x + x2 = 25.7125

Factor a perfect square on the left side:
(x + 4.75)(x + 4.75) = 25.7125

Calculate the square root of the right side: 5.070749452

Break this problem into two subproblems by setting 
(x + 4.75) equal to 5.070749452 and -5.070749452.

Subproblem 1

x + 4.75 = 5.070749452 Simplifying x + 4.75 = 5.070749452 Reorder the terms: 4.75 + x = 5.070749452 Solving 4.75 + x = 5.070749452 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.75' to each side of the equation. 4.75 + -4.75 + x = 5.070749452 + -4.75 Combine like terms: 4.75 + -4.75 = 0.00 0.00 + x = 5.070749452 + -4.75 x = 5.070749452 + -4.75 Combine like terms: 5.070749452 + -4.75 = 0.320749452 x = 0.320749452 Simplifying x = 0.320749452

Subproblem 2

x + 4.75 = -5.070749452 Simplifying x + 4.75 = -5.070749452 Reorder the terms: 4.75 + x = -5.070749452 Solving 4.75 + x = -5.070749452 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.75' to each side of the equation. 4.75 + -4.75 + x = -5.070749452 + -4.75 Combine like terms: 4.75 + -4.75 = 0.00 0.00 + x = -5.070749452 + -4.75 x = -5.070749452 + -4.75 Combine like terms: -5.070749452 + -4.75 = -9.820749452 x = -9.820749452 Simplifying x = -9.820749452

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.320749452, -9.820749452}

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