x^2-24x-18=0

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Solution for x^2-24x-18=0 equation:


Simplifying
x2 + -24x + -18 = 0

Reorder the terms:
-18 + -24x + x2 = 0

Solving
-18 + -24x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '18' to each side of the equation.
-18 + -24x + 18 + x2 = 0 + 18

Reorder the terms:
-18 + 18 + -24x + x2 = 0 + 18

Combine like terms: -18 + 18 = 0
0 + -24x + x2 = 0 + 18
-24x + x2 = 0 + 18

Combine like terms: 0 + 18 = 18
-24x + x2 = 18

The x term is -24x.  Take half its coefficient (-12).
Square it (144) and add it to both sides.

Add '144' to each side of the equation.
-24x + 144 + x2 = 18 + 144

Reorder the terms:
144 + -24x + x2 = 18 + 144

Combine like terms: 18 + 144 = 162
144 + -24x + x2 = 162

Factor a perfect square on the left side:
(x + -12)(x + -12) = 162

Calculate the square root of the right side: 12.727922061

Break this problem into two subproblems by setting 
(x + -12) equal to 12.727922061 and -12.727922061.

Subproblem 1

x + -12 = 12.727922061 Simplifying x + -12 = 12.727922061 Reorder the terms: -12 + x = 12.727922061 Solving -12 + x = 12.727922061 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + x = 12.727922061 + 12 Combine like terms: -12 + 12 = 0 0 + x = 12.727922061 + 12 x = 12.727922061 + 12 Combine like terms: 12.727922061 + 12 = 24.727922061 x = 24.727922061 Simplifying x = 24.727922061

Subproblem 2

x + -12 = -12.727922061 Simplifying x + -12 = -12.727922061 Reorder the terms: -12 + x = -12.727922061 Solving -12 + x = -12.727922061 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + x = -12.727922061 + 12 Combine like terms: -12 + 12 = 0 0 + x = -12.727922061 + 12 x = -12.727922061 + 12 Combine like terms: -12.727922061 + 12 = -0.727922061 x = -0.727922061 Simplifying x = -0.727922061

Solution

The solution to the problem is based on the solutions from the subproblems. x = {24.727922061, -0.727922061}

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