4x^2+19x+19=0

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Solution for 4x^2+19x+19=0 equation:


Simplifying
4x2 + 19x + 19 = 0

Reorder the terms:
19 + 19x + 4x2 = 0

Solving
19 + 19x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
4.75 + 4.75x + x2 = 0

Move the constant term to the right:

Add '-4.75' to each side of the equation.
4.75 + 4.75x + -4.75 + x2 = 0 + -4.75

Reorder the terms:
4.75 + -4.75 + 4.75x + x2 = 0 + -4.75

Combine like terms: 4.75 + -4.75 = 0.00
0.00 + 4.75x + x2 = 0 + -4.75
4.75x + x2 = 0 + -4.75

Combine like terms: 0 + -4.75 = -4.75
4.75x + x2 = -4.75

The x term is 4.75x.  Take half its coefficient (2.375).
Square it (5.640625) and add it to both sides.

Add '5.640625' to each side of the equation.
4.75x + 5.640625 + x2 = -4.75 + 5.640625

Reorder the terms:
5.640625 + 4.75x + x2 = -4.75 + 5.640625

Combine like terms: -4.75 + 5.640625 = 0.890625
5.640625 + 4.75x + x2 = 0.890625

Factor a perfect square on the left side:
(x + 2.375)(x + 2.375) = 0.890625

Calculate the square root of the right side: 0.943729304

Break this problem into two subproblems by setting 
(x + 2.375) equal to 0.943729304 and -0.943729304.

Subproblem 1

x + 2.375 = 0.943729304 Simplifying x + 2.375 = 0.943729304 Reorder the terms: 2.375 + x = 0.943729304 Solving 2.375 + x = 0.943729304 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.375' to each side of the equation. 2.375 + -2.375 + x = 0.943729304 + -2.375 Combine like terms: 2.375 + -2.375 = 0.000 0.000 + x = 0.943729304 + -2.375 x = 0.943729304 + -2.375 Combine like terms: 0.943729304 + -2.375 = -1.431270696 x = -1.431270696 Simplifying x = -1.431270696

Subproblem 2

x + 2.375 = -0.943729304 Simplifying x + 2.375 = -0.943729304 Reorder the terms: 2.375 + x = -0.943729304 Solving 2.375 + x = -0.943729304 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.375' to each side of the equation. 2.375 + -2.375 + x = -0.943729304 + -2.375 Combine like terms: 2.375 + -2.375 = 0.000 0.000 + x = -0.943729304 + -2.375 x = -0.943729304 + -2.375 Combine like terms: -0.943729304 + -2.375 = -3.318729304 x = -3.318729304 Simplifying x = -3.318729304

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.431270696, -3.318729304}

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