2x^2-160x+275=0

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Solution for 2x^2-160x+275=0 equation:


Simplifying
2x2 + -160x + 275 = 0

Reorder the terms:
275 + -160x + 2x2 = 0

Solving
275 + -160x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
137.5 + -80x + x2 = 0

Move the constant term to the right:

Add '-137.5' to each side of the equation.
137.5 + -80x + -137.5 + x2 = 0 + -137.5

Reorder the terms:
137.5 + -137.5 + -80x + x2 = 0 + -137.5

Combine like terms: 137.5 + -137.5 = 0.0
0.0 + -80x + x2 = 0 + -137.5
-80x + x2 = 0 + -137.5

Combine like terms: 0 + -137.5 = -137.5
-80x + x2 = -137.5

The x term is -80x.  Take half its coefficient (-40).
Square it (1600) and add it to both sides.

Add '1600' to each side of the equation.
-80x + 1600 + x2 = -137.5 + 1600

Reorder the terms:
1600 + -80x + x2 = -137.5 + 1600

Combine like terms: -137.5 + 1600 = 1462.5
1600 + -80x + x2 = 1462.5

Factor a perfect square on the left side:
(x + -40)(x + -40) = 1462.5

Calculate the square root of the right side: 38.242646352

Break this problem into two subproblems by setting 
(x + -40) equal to 38.242646352 and -38.242646352.

Subproblem 1

x + -40 = 38.242646352 Simplifying x + -40 = 38.242646352 Reorder the terms: -40 + x = 38.242646352 Solving -40 + x = 38.242646352 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '40' to each side of the equation. -40 + 40 + x = 38.242646352 + 40 Combine like terms: -40 + 40 = 0 0 + x = 38.242646352 + 40 x = 38.242646352 + 40 Combine like terms: 38.242646352 + 40 = 78.242646352 x = 78.242646352 Simplifying x = 78.242646352

Subproblem 2

x + -40 = -38.242646352 Simplifying x + -40 = -38.242646352 Reorder the terms: -40 + x = -38.242646352 Solving -40 + x = -38.242646352 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '40' to each side of the equation. -40 + 40 + x = -38.242646352 + 40 Combine like terms: -40 + 40 = 0 0 + x = -38.242646352 + 40 x = -38.242646352 + 40 Combine like terms: -38.242646352 + 40 = 1.757353648 x = 1.757353648 Simplifying x = 1.757353648

Solution

The solution to the problem is based on the solutions from the subproblems. x = {78.242646352, 1.757353648}

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