x^2-73x+320=0

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Solution for x^2-73x+320=0 equation:


Simplifying
x2 + -73x + 320 = 0

Reorder the terms:
320 + -73x + x2 = 0

Solving
320 + -73x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-320' to each side of the equation.
320 + -73x + -320 + x2 = 0 + -320

Reorder the terms:
320 + -320 + -73x + x2 = 0 + -320

Combine like terms: 320 + -320 = 0
0 + -73x + x2 = 0 + -320
-73x + x2 = 0 + -320

Combine like terms: 0 + -320 = -320
-73x + x2 = -320

The x term is -73x.  Take half its coefficient (-36.5).
Square it (1332.25) and add it to both sides.

Add '1332.25' to each side of the equation.
-73x + 1332.25 + x2 = -320 + 1332.25

Reorder the terms:
1332.25 + -73x + x2 = -320 + 1332.25

Combine like terms: -320 + 1332.25 = 1012.25
1332.25 + -73x + x2 = 1012.25

Factor a perfect square on the left side:
(x + -36.5)(x + -36.5) = 1012.25

Calculate the square root of the right side: 31.81587654

Break this problem into two subproblems by setting 
(x + -36.5) equal to 31.81587654 and -31.81587654.

Subproblem 1

x + -36.5 = 31.81587654 Simplifying x + -36.5 = 31.81587654 Reorder the terms: -36.5 + x = 31.81587654 Solving -36.5 + x = 31.81587654 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '36.5' to each side of the equation. -36.5 + 36.5 + x = 31.81587654 + 36.5 Combine like terms: -36.5 + 36.5 = 0.0 0.0 + x = 31.81587654 + 36.5 x = 31.81587654 + 36.5 Combine like terms: 31.81587654 + 36.5 = 68.31587654 x = 68.31587654 Simplifying x = 68.31587654

Subproblem 2

x + -36.5 = -31.81587654 Simplifying x + -36.5 = -31.81587654 Reorder the terms: -36.5 + x = -31.81587654 Solving -36.5 + x = -31.81587654 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '36.5' to each side of the equation. -36.5 + 36.5 + x = -31.81587654 + 36.5 Combine like terms: -36.5 + 36.5 = 0.0 0.0 + x = -31.81587654 + 36.5 x = -31.81587654 + 36.5 Combine like terms: -31.81587654 + 36.5 = 4.68412346 x = 4.68412346 Simplifying x = 4.68412346

Solution

The solution to the problem is based on the solutions from the subproblems. x = {68.31587654, 4.68412346}

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