x^2+24x+90=0

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Solution for x^2+24x+90=0 equation:


Simplifying
x2 + 24x + 90 = 0

Reorder the terms:
90 + 24x + x2 = 0

Solving
90 + 24x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-90' to each side of the equation.
90 + 24x + -90 + x2 = 0 + -90

Reorder the terms:
90 + -90 + 24x + x2 = 0 + -90

Combine like terms: 90 + -90 = 0
0 + 24x + x2 = 0 + -90
24x + x2 = 0 + -90

Combine like terms: 0 + -90 = -90
24x + x2 = -90

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 = -90 + 144

Reorder the terms:
144 + 24x + x2 = -90 + 144

Combine like terms: -90 + 144 = 54
144 + 24x + x2 = 54

Factor a perfect square on the left side:
(x + 12)(x + 12) = 54

Calculate the square root of the right side: 7.348469228

Break this problem into two subproblems by setting 
(x + 12) equal to 7.348469228 and -7.348469228.

Subproblem 1

x + 12 = 7.348469228 Simplifying x + 12 = 7.348469228 Reorder the terms: 12 + x = 7.348469228 Solving 12 + x = 7.348469228 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 = 7.348469228 + -12 Combine like terms: 12 + -12 = 0 0 + x = 7.348469228 + -12 x = 7.348469228 + -12 Combine like terms: 7.348469228 + -12 = -4.651530772 x = -4.651530772 Simplifying x = -4.651530772

Subproblem 2

x + 12 = -7.348469228 Simplifying x + 12 = -7.348469228 Reorder the terms: 12 + x = -7.348469228 Solving 12 + x = -7.348469228 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 = -7.348469228 + -12 Combine like terms: 12 + -12 = 0 0 + x = -7.348469228 + -12 x = -7.348469228 + -12 Combine like terms: -7.348469228 + -12 = -19.348469228 x = -19.348469228 Simplifying x = -19.348469228

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-4.651530772, -19.348469228}

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