19x+2x^2+38=0

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Solution for 19x+2x^2+38=0 equation:


Simplifying
19x + 2x2 + 38 = 0

Reorder the terms:
38 + 19x + 2x2 = 0

Solving
38 + 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'.
19 + 9.5x + x2 = 0

Move the constant term to the right:

Add '-19' to each side of the equation.
19 + 9.5x + -19 + x2 = 0 + -19

Reorder the terms:
19 + -19 + 9.5x + x2 = 0 + -19

Combine like terms: 19 + -19 = 0
0 + 9.5x + x2 = 0 + -19
9.5x + x2 = 0 + -19

Combine like terms: 0 + -19 = -19
9.5x + x2 = -19

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 = -19 + 22.5625

Reorder the terms:
22.5625 + 9.5x + x2 = -19 + 22.5625

Combine like terms: -19 + 22.5625 = 3.5625
22.5625 + 9.5x + x2 = 3.5625

Factor a perfect square on the left side:
(x + 4.75)(x + 4.75) = 3.5625

Calculate the square root of the right side: 1.887458609

Break this problem into two subproblems by setting 
(x + 4.75) equal to 1.887458609 and -1.887458609.

Subproblem 1

x + 4.75 = 1.887458609 Simplifying x + 4.75 = 1.887458609 Reorder the terms: 4.75 + x = 1.887458609 Solving 4.75 + x = 1.887458609 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 = 1.887458609 + -4.75 Combine like terms: 4.75 + -4.75 = 0.00 0.00 + x = 1.887458609 + -4.75 x = 1.887458609 + -4.75 Combine like terms: 1.887458609 + -4.75 = -2.862541391 x = -2.862541391 Simplifying x = -2.862541391

Subproblem 2

x + 4.75 = -1.887458609 Simplifying x + 4.75 = -1.887458609 Reorder the terms: 4.75 + x = -1.887458609 Solving 4.75 + x = -1.887458609 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 = -1.887458609 + -4.75 Combine like terms: 4.75 + -4.75 = 0.00 0.00 + x = -1.887458609 + -4.75 x = -1.887458609 + -4.75 Combine like terms: -1.887458609 + -4.75 = -6.637458609 x = -6.637458609 Simplifying x = -6.637458609

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-2.862541391, -6.637458609}

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