x^2-18x-8845=0

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Solution for x^2-18x-8845=0 equation:


Simplifying
x2 + -18x + -8845 = 0

Reorder the terms:
-8845 + -18x + x2 = 0

Solving
-8845 + -18x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '8845' to each side of the equation.
-8845 + -18x + 8845 + x2 = 0 + 8845

Reorder the terms:
-8845 + 8845 + -18x + x2 = 0 + 8845

Combine like terms: -8845 + 8845 = 0
0 + -18x + x2 = 0 + 8845
-18x + x2 = 0 + 8845

Combine like terms: 0 + 8845 = 8845
-18x + x2 = 8845

The x term is -18x.  Take half its coefficient (-9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
-18x + 81 + x2 = 8845 + 81

Reorder the terms:
81 + -18x + x2 = 8845 + 81

Combine like terms: 8845 + 81 = 8926
81 + -18x + x2 = 8926

Factor a perfect square on the left side:
(x + -9)(x + -9) = 8926

Calculate the square root of the right side: 94.477510551

Break this problem into two subproblems by setting 
(x + -9) equal to 94.477510551 and -94.477510551.

Subproblem 1

x + -9 = 94.477510551 Simplifying x + -9 = 94.477510551 Reorder the terms: -9 + x = 94.477510551 Solving -9 + x = 94.477510551 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = 94.477510551 + 9 Combine like terms: -9 + 9 = 0 0 + x = 94.477510551 + 9 x = 94.477510551 + 9 Combine like terms: 94.477510551 + 9 = 103.477510551 x = 103.477510551 Simplifying x = 103.477510551

Subproblem 2

x + -9 = -94.477510551 Simplifying x + -9 = -94.477510551 Reorder the terms: -9 + x = -94.477510551 Solving -9 + x = -94.477510551 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + x = -94.477510551 + 9 Combine like terms: -9 + 9 = 0 0 + x = -94.477510551 + 9 x = -94.477510551 + 9 Combine like terms: -94.477510551 + 9 = -85.477510551 x = -85.477510551 Simplifying x = -85.477510551

Solution

The solution to the problem is based on the solutions from the subproblems. x = {103.477510551, -85.477510551}

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