5x^2+8x-44=0

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Solution for 5x^2+8x-44=0 equation:


Simplifying
5x2 + 8x + -44 = 0

Reorder the terms:
-44 + 8x + 5x2 = 0

Solving
-44 + 8x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
-8.8 + 1.6x + x2 = 0

Move the constant term to the right:

Add '8.8' to each side of the equation.
-8.8 + 1.6x + 8.8 + x2 = 0 + 8.8

Reorder the terms:
-8.8 + 8.8 + 1.6x + x2 = 0 + 8.8

Combine like terms: -8.8 + 8.8 = 0.0
0.0 + 1.6x + x2 = 0 + 8.8
1.6x + x2 = 0 + 8.8

Combine like terms: 0 + 8.8 = 8.8
1.6x + x2 = 8.8

The x term is 1.6x.  Take half its coefficient (0.8).
Square it (0.64) and add it to both sides.

Add '0.64' to each side of the equation.
1.6x + 0.64 + x2 = 8.8 + 0.64

Reorder the terms:
0.64 + 1.6x + x2 = 8.8 + 0.64

Combine like terms: 8.8 + 0.64 = 9.44
0.64 + 1.6x + x2 = 9.44

Factor a perfect square on the left side:
(x + 0.8)(x + 0.8) = 9.44

Calculate the square root of the right side: 3.072458299

Break this problem into two subproblems by setting 
(x + 0.8) equal to 3.072458299 and -3.072458299.

Subproblem 1

x + 0.8 = 3.072458299 Simplifying x + 0.8 = 3.072458299 Reorder the terms: 0.8 + x = 3.072458299 Solving 0.8 + x = 3.072458299 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.8' to each side of the equation. 0.8 + -0.8 + x = 3.072458299 + -0.8 Combine like terms: 0.8 + -0.8 = 0.0 0.0 + x = 3.072458299 + -0.8 x = 3.072458299 + -0.8 Combine like terms: 3.072458299 + -0.8 = 2.272458299 x = 2.272458299 Simplifying x = 2.272458299

Subproblem 2

x + 0.8 = -3.072458299 Simplifying x + 0.8 = -3.072458299 Reorder the terms: 0.8 + x = -3.072458299 Solving 0.8 + x = -3.072458299 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.8' to each side of the equation. 0.8 + -0.8 + x = -3.072458299 + -0.8 Combine like terms: 0.8 + -0.8 = 0.0 0.0 + x = -3.072458299 + -0.8 x = -3.072458299 + -0.8 Combine like terms: -3.072458299 + -0.8 = -3.872458299 x = -3.872458299 Simplifying x = -3.872458299

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.272458299, -3.872458299}

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