5x^2-112*x+256=0

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Solution for 5x^2-112*x+256=0 equation:


Simplifying
5x2 + -112x + 256 = 0

Reorder the terms:
256 + -112x + 5x2 = 0

Solving
256 + -112x + 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'.
51.2 + -22.4x + x2 = 0

Move the constant term to the right:

Add '-51.2' to each side of the equation.
51.2 + -22.4x + -51.2 + x2 = 0 + -51.2

Reorder the terms:
51.2 + -51.2 + -22.4x + x2 = 0 + -51.2

Combine like terms: 51.2 + -51.2 = 0.0
0.0 + -22.4x + x2 = 0 + -51.2
-22.4x + x2 = 0 + -51.2

Combine like terms: 0 + -51.2 = -51.2
-22.4x + x2 = -51.2

The x term is -22.4x.  Take half its coefficient (-11.2).
Square it (125.44) and add it to both sides.

Add '125.44' to each side of the equation.
-22.4x + 125.44 + x2 = -51.2 + 125.44

Reorder the terms:
125.44 + -22.4x + x2 = -51.2 + 125.44

Combine like terms: -51.2 + 125.44 = 74.24
125.44 + -22.4x + x2 = 74.24

Factor a perfect square on the left side:
(x + -11.2)(x + -11.2) = 74.24

Calculate the square root of the right side: 8.616263691

Break this problem into two subproblems by setting 
(x + -11.2) equal to 8.616263691 and -8.616263691.

Subproblem 1

x + -11.2 = 8.616263691 Simplifying x + -11.2 = 8.616263691 Reorder the terms: -11.2 + x = 8.616263691 Solving -11.2 + x = 8.616263691 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '11.2' to each side of the equation. -11.2 + 11.2 + x = 8.616263691 + 11.2 Combine like terms: -11.2 + 11.2 = 0.0 0.0 + x = 8.616263691 + 11.2 x = 8.616263691 + 11.2 Combine like terms: 8.616263691 + 11.2 = 19.816263691 x = 19.816263691 Simplifying x = 19.816263691

Subproblem 2

x + -11.2 = -8.616263691 Simplifying x + -11.2 = -8.616263691 Reorder the terms: -11.2 + x = -8.616263691 Solving -11.2 + x = -8.616263691 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '11.2' to each side of the equation. -11.2 + 11.2 + x = -8.616263691 + 11.2 Combine like terms: -11.2 + 11.2 = 0.0 0.0 + x = -8.616263691 + 11.2 x = -8.616263691 + 11.2 Combine like terms: -8.616263691 + 11.2 = 2.583736309 x = 2.583736309 Simplifying x = 2.583736309

Solution

The solution to the problem is based on the solutions from the subproblems. x = {19.816263691, 2.583736309}

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