5x^2-28x-110=0

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Solution for 5x^2-28x-110=0 equation:


Simplifying
5x2 + -28x + -110 = 0

Reorder the terms:
-110 + -28x + 5x2 = 0

Solving
-110 + -28x + 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'.
-22 + -5.6x + x2 = 0

Move the constant term to the right:

Add '22' to each side of the equation.
-22 + -5.6x + 22 + x2 = 0 + 22

Reorder the terms:
-22 + 22 + -5.6x + x2 = 0 + 22

Combine like terms: -22 + 22 = 0
0 + -5.6x + x2 = 0 + 22
-5.6x + x2 = 0 + 22

Combine like terms: 0 + 22 = 22
-5.6x + x2 = 22

The x term is -5.6x.  Take half its coefficient (-2.8).
Square it (7.84) and add it to both sides.

Add '7.84' to each side of the equation.
-5.6x + 7.84 + x2 = 22 + 7.84

Reorder the terms:
7.84 + -5.6x + x2 = 22 + 7.84

Combine like terms: 22 + 7.84 = 29.84
7.84 + -5.6x + x2 = 29.84

Factor a perfect square on the left side:
(x + -2.8)(x + -2.8) = 29.84

Calculate the square root of the right side: 5.462600113

Break this problem into two subproblems by setting 
(x + -2.8) equal to 5.462600113 and -5.462600113.

Subproblem 1

x + -2.8 = 5.462600113 Simplifying x + -2.8 = 5.462600113 Reorder the terms: -2.8 + x = 5.462600113 Solving -2.8 + x = 5.462600113 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.8' to each side of the equation. -2.8 + 2.8 + x = 5.462600113 + 2.8 Combine like terms: -2.8 + 2.8 = 0.0 0.0 + x = 5.462600113 + 2.8 x = 5.462600113 + 2.8 Combine like terms: 5.462600113 + 2.8 = 8.262600113 x = 8.262600113 Simplifying x = 8.262600113

Subproblem 2

x + -2.8 = -5.462600113 Simplifying x + -2.8 = -5.462600113 Reorder the terms: -2.8 + x = -5.462600113 Solving -2.8 + x = -5.462600113 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.8' to each side of the equation. -2.8 + 2.8 + x = -5.462600113 + 2.8 Combine like terms: -2.8 + 2.8 = 0.0 0.0 + x = -5.462600113 + 2.8 x = -5.462600113 + 2.8 Combine like terms: -5.462600113 + 2.8 = -2.662600113 x = -2.662600113 Simplifying x = -2.662600113

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.262600113, -2.662600113}

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