5x^2+6x-22=0

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Solution for 5x^2+6x-22=0 equation:


Simplifying
5x2 + 6x + -22 = 0

Reorder the terms:
-22 + 6x + 5x2 = 0

Solving
-22 + 6x + 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'.
-4.4 + 1.2x + x2 = 0

Move the constant term to the right:

Add '4.4' to each side of the equation.
-4.4 + 1.2x + 4.4 + x2 = 0 + 4.4

Reorder the terms:
-4.4 + 4.4 + 1.2x + x2 = 0 + 4.4

Combine like terms: -4.4 + 4.4 = 0.0
0.0 + 1.2x + x2 = 0 + 4.4
1.2x + x2 = 0 + 4.4

Combine like terms: 0 + 4.4 = 4.4
1.2x + x2 = 4.4

The x term is 1.2x.  Take half its coefficient (0.6).
Square it (0.36) and add it to both sides.

Add '0.36' to each side of the equation.
1.2x + 0.36 + x2 = 4.4 + 0.36

Reorder the terms:
0.36 + 1.2x + x2 = 4.4 + 0.36

Combine like terms: 4.4 + 0.36 = 4.76
0.36 + 1.2x + x2 = 4.76

Factor a perfect square on the left side:
(x + 0.6)(x + 0.6) = 4.76

Calculate the square root of the right side: 2.181742423

Break this problem into two subproblems by setting 
(x + 0.6) equal to 2.181742423 and -2.181742423.

Subproblem 1

x + 0.6 = 2.181742423 Simplifying x + 0.6 = 2.181742423 Reorder the terms: 0.6 + x = 2.181742423 Solving 0.6 + x = 2.181742423 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6' to each side of the equation. 0.6 + -0.6 + x = 2.181742423 + -0.6 Combine like terms: 0.6 + -0.6 = 0.0 0.0 + x = 2.181742423 + -0.6 x = 2.181742423 + -0.6 Combine like terms: 2.181742423 + -0.6 = 1.581742423 x = 1.581742423 Simplifying x = 1.581742423

Subproblem 2

x + 0.6 = -2.181742423 Simplifying x + 0.6 = -2.181742423 Reorder the terms: 0.6 + x = -2.181742423 Solving 0.6 + x = -2.181742423 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6' to each side of the equation. 0.6 + -0.6 + x = -2.181742423 + -0.6 Combine like terms: 0.6 + -0.6 = 0.0 0.0 + x = -2.181742423 + -0.6 x = -2.181742423 + -0.6 Combine like terms: -2.181742423 + -0.6 = -2.781742423 x = -2.781742423 Simplifying x = -2.781742423

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.581742423, -2.781742423}

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