(x^2)-72x+7=0

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Solution for (x^2)-72x+7=0 equation:


Simplifying
(x2) + -72x + 7 = 0
x2 + -72x + 7 = 0

Reorder the terms:
7 + -72x + x2 = 0

Solving
7 + -72x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-7' to each side of the equation.
7 + -72x + -7 + x2 = 0 + -7

Reorder the terms:
7 + -7 + -72x + x2 = 0 + -7

Combine like terms: 7 + -7 = 0
0 + -72x + x2 = 0 + -7
-72x + x2 = 0 + -7

Combine like terms: 0 + -7 = -7
-72x + x2 = -7

The x term is -72x.  Take half its coefficient (-36).
Square it (1296) and add it to both sides.

Add '1296' to each side of the equation.
-72x + 1296 + x2 = -7 + 1296

Reorder the terms:
1296 + -72x + x2 = -7 + 1296

Combine like terms: -7 + 1296 = 1289
1296 + -72x + x2 = 1289

Factor a perfect square on the left side:
(x + -36)(x + -36) = 1289

Calculate the square root of the right side: 35.902646142

Break this problem into two subproblems by setting 
(x + -36) equal to 35.902646142 and -35.902646142.

Subproblem 1

x + -36 = 35.902646142 Simplifying x + -36 = 35.902646142 Reorder the terms: -36 + x = 35.902646142 Solving -36 + x = 35.902646142 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '36' to each side of the equation. -36 + 36 + x = 35.902646142 + 36 Combine like terms: -36 + 36 = 0 0 + x = 35.902646142 + 36 x = 35.902646142 + 36 Combine like terms: 35.902646142 + 36 = 71.902646142 x = 71.902646142 Simplifying x = 71.902646142

Subproblem 2

x + -36 = -35.902646142 Simplifying x + -36 = -35.902646142 Reorder the terms: -36 + x = -35.902646142 Solving -36 + x = -35.902646142 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '36' to each side of the equation. -36 + 36 + x = -35.902646142 + 36 Combine like terms: -36 + 36 = 0 0 + x = -35.902646142 + 36 x = -35.902646142 + 36 Combine like terms: -35.902646142 + 36 = 0.097353858 x = 0.097353858 Simplifying x = 0.097353858

Solution

The solution to the problem is based on the solutions from the subproblems. x = {71.902646142, 0.097353858}

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