x^2+24x-215=0

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Solution for x^2+24x-215=0 equation:


Simplifying
x2 + 24x + -215 = 0

Reorder the terms:
-215 + 24x + x2 = 0

Solving
-215 + 24x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '215' to each side of the equation.
-215 + 24x + 215 + x2 = 0 + 215

Reorder the terms:
-215 + 215 + 24x + x2 = 0 + 215

Combine like terms: -215 + 215 = 0
0 + 24x + x2 = 0 + 215
24x + x2 = 0 + 215

Combine like terms: 0 + 215 = 215
24x + x2 = 215

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 = 215 + 144

Reorder the terms:
144 + 24x + x2 = 215 + 144

Combine like terms: 215 + 144 = 359
144 + 24x + x2 = 359

Factor a perfect square on the left side:
(x + 12)(x + 12) = 359

Calculate the square root of the right side: 18.947295321

Break this problem into two subproblems by setting 
(x + 12) equal to 18.947295321 and -18.947295321.

Subproblem 1

x + 12 = 18.947295321 Simplifying x + 12 = 18.947295321 Reorder the terms: 12 + x = 18.947295321 Solving 12 + x = 18.947295321 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 = 18.947295321 + -12 Combine like terms: 12 + -12 = 0 0 + x = 18.947295321 + -12 x = 18.947295321 + -12 Combine like terms: 18.947295321 + -12 = 6.947295321 x = 6.947295321 Simplifying x = 6.947295321

Subproblem 2

x + 12 = -18.947295321 Simplifying x + 12 = -18.947295321 Reorder the terms: 12 + x = -18.947295321 Solving 12 + x = -18.947295321 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 = -18.947295321 + -12 Combine like terms: 12 + -12 = 0 0 + x = -18.947295321 + -12 x = -18.947295321 + -12 Combine like terms: -18.947295321 + -12 = -30.947295321 x = -30.947295321 Simplifying x = -30.947295321

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.947295321, -30.947295321}

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