x^2-12x-1620=0

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Solution for x^2-12x-1620=0 equation:


Simplifying
x2 + -12x + -1620 = 0

Reorder the terms:
-1620 + -12x + x2 = 0

Solving
-1620 + -12x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '1620' to each side of the equation.
-1620 + -12x + 1620 + x2 = 0 + 1620

Reorder the terms:
-1620 + 1620 + -12x + x2 = 0 + 1620

Combine like terms: -1620 + 1620 = 0
0 + -12x + x2 = 0 + 1620
-12x + x2 = 0 + 1620

Combine like terms: 0 + 1620 = 1620
-12x + x2 = 1620

The x term is -12x.  Take half its coefficient (-6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
-12x + 36 + x2 = 1620 + 36

Reorder the terms:
36 + -12x + x2 = 1620 + 36

Combine like terms: 1620 + 36 = 1656
36 + -12x + x2 = 1656

Factor a perfect square on the left side:
(x + -6)(x + -6) = 1656

Calculate the square root of the right side: 40.693979899

Break this problem into two subproblems by setting 
(x + -6) equal to 40.693979899 and -40.693979899.

Subproblem 1

x + -6 = 40.693979899 Simplifying x + -6 = 40.693979899 Reorder the terms: -6 + x = 40.693979899 Solving -6 + x = 40.693979899 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = 40.693979899 + 6 Combine like terms: -6 + 6 = 0 0 + x = 40.693979899 + 6 x = 40.693979899 + 6 Combine like terms: 40.693979899 + 6 = 46.693979899 x = 46.693979899 Simplifying x = 46.693979899

Subproblem 2

x + -6 = -40.693979899 Simplifying x + -6 = -40.693979899 Reorder the terms: -6 + x = -40.693979899 Solving -6 + x = -40.693979899 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = -40.693979899 + 6 Combine like terms: -6 + 6 = 0 0 + x = -40.693979899 + 6 x = -40.693979899 + 6 Combine like terms: -40.693979899 + 6 = -34.693979899 x = -34.693979899 Simplifying x = -34.693979899

Solution

The solution to the problem is based on the solutions from the subproblems. x = {46.693979899, -34.693979899}

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