x^2+81x+8-24=0

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Solution for x^2+81x+8-24=0 equation:


Simplifying
x2 + 81x + 8 + -24 = 0

Reorder the terms:
8 + -24 + 81x + x2 = 0

Combine like terms: 8 + -24 = -16
-16 + 81x + x2 = 0

Solving
-16 + 81x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '16' to each side of the equation.
-16 + 81x + 16 + x2 = 0 + 16

Reorder the terms:
-16 + 16 + 81x + x2 = 0 + 16

Combine like terms: -16 + 16 = 0
0 + 81x + x2 = 0 + 16
81x + x2 = 0 + 16

Combine like terms: 0 + 16 = 16
81x + x2 = 16

The x term is 81x.  Take half its coefficient (40.5).
Square it (1640.25) and add it to both sides.

Add '1640.25' to each side of the equation.
81x + 1640.25 + x2 = 16 + 1640.25

Reorder the terms:
1640.25 + 81x + x2 = 16 + 1640.25

Combine like terms: 16 + 1640.25 = 1656.25
1640.25 + 81x + x2 = 1656.25

Factor a perfect square on the left side:
(x + 40.5)(x + 40.5) = 1656.25

Calculate the square root of the right side: 40.69705149

Break this problem into two subproblems by setting 
(x + 40.5) equal to 40.69705149 and -40.69705149.

Subproblem 1

x + 40.5 = 40.69705149 Simplifying x + 40.5 = 40.69705149 Reorder the terms: 40.5 + x = 40.69705149 Solving 40.5 + x = 40.69705149 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-40.5' to each side of the equation. 40.5 + -40.5 + x = 40.69705149 + -40.5 Combine like terms: 40.5 + -40.5 = 0.0 0.0 + x = 40.69705149 + -40.5 x = 40.69705149 + -40.5 Combine like terms: 40.69705149 + -40.5 = 0.19705149 x = 0.19705149 Simplifying x = 0.19705149

Subproblem 2

x + 40.5 = -40.69705149 Simplifying x + 40.5 = -40.69705149 Reorder the terms: 40.5 + x = -40.69705149 Solving 40.5 + x = -40.69705149 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-40.5' to each side of the equation. 40.5 + -40.5 + x = -40.69705149 + -40.5 Combine like terms: 40.5 + -40.5 = 0.0 0.0 + x = -40.69705149 + -40.5 x = -40.69705149 + -40.5 Combine like terms: -40.69705149 + -40.5 = -81.19705149 x = -81.19705149 Simplifying x = -81.19705149

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.19705149, -81.19705149}

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