x^2-60x-900=0

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Solution for x^2-60x-900=0 equation:


Simplifying
x2 + -60x + -900 = 0

Reorder the terms:
-900 + -60x + x2 = 0

Solving
-900 + -60x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '900' to each side of the equation.
-900 + -60x + 900 + x2 = 0 + 900

Reorder the terms:
-900 + 900 + -60x + x2 = 0 + 900

Combine like terms: -900 + 900 = 0
0 + -60x + x2 = 0 + 900
-60x + x2 = 0 + 900

Combine like terms: 0 + 900 = 900
-60x + x2 = 900

The x term is -60x.  Take half its coefficient (-30).
Square it (900) and add it to both sides.

Add '900' to each side of the equation.
-60x + 900 + x2 = 900 + 900

Reorder the terms:
900 + -60x + x2 = 900 + 900

Combine like terms: 900 + 900 = 1800
900 + -60x + x2 = 1800

Factor a perfect square on the left side:
(x + -30)(x + -30) = 1800

Calculate the square root of the right side: 42.426406871

Break this problem into two subproblems by setting 
(x + -30) equal to 42.426406871 and -42.426406871.

Subproblem 1

x + -30 = 42.426406871 Simplifying x + -30 = 42.426406871 Reorder the terms: -30 + x = 42.426406871 Solving -30 + x = 42.426406871 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '30' to each side of the equation. -30 + 30 + x = 42.426406871 + 30 Combine like terms: -30 + 30 = 0 0 + x = 42.426406871 + 30 x = 42.426406871 + 30 Combine like terms: 42.426406871 + 30 = 72.426406871 x = 72.426406871 Simplifying x = 72.426406871

Subproblem 2

x + -30 = -42.426406871 Simplifying x + -30 = -42.426406871 Reorder the terms: -30 + x = -42.426406871 Solving -30 + x = -42.426406871 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '30' to each side of the equation. -30 + 30 + x = -42.426406871 + 30 Combine like terms: -30 + 30 = 0 0 + x = -42.426406871 + 30 x = -42.426406871 + 30 Combine like terms: -42.426406871 + 30 = -12.426406871 x = -12.426406871 Simplifying x = -12.426406871

Solution

The solution to the problem is based on the solutions from the subproblems. x = {72.426406871, -12.426406871}

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