x^2+81x+62=0

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Solution for x^2+81x+62=0 equation:


Simplifying
x2 + 81x + 62 = 0

Reorder the terms:
62 + 81x + x2 = 0

Solving
62 + 81x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-62' to each side of the equation.
62 + 81x + -62 + x2 = 0 + -62

Reorder the terms:
62 + -62 + 81x + x2 = 0 + -62

Combine like terms: 62 + -62 = 0
0 + 81x + x2 = 0 + -62
81x + x2 = 0 + -62

Combine like terms: 0 + -62 = -62
81x + x2 = -62

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 = -62 + 1640.25

Reorder the terms:
1640.25 + 81x + x2 = -62 + 1640.25

Combine like terms: -62 + 1640.25 = 1578.25
1640.25 + 81x + x2 = 1578.25

Factor a perfect square on the left side:
(x + 40.5)(x + 40.5) = 1578.25

Calculate the square root of the right side: 39.727194716

Break this problem into two subproblems by setting 
(x + 40.5) equal to 39.727194716 and -39.727194716.

Subproblem 1

x + 40.5 = 39.727194716 Simplifying x + 40.5 = 39.727194716 Reorder the terms: 40.5 + x = 39.727194716 Solving 40.5 + x = 39.727194716 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 = 39.727194716 + -40.5 Combine like terms: 40.5 + -40.5 = 0.0 0.0 + x = 39.727194716 + -40.5 x = 39.727194716 + -40.5 Combine like terms: 39.727194716 + -40.5 = -0.772805284 x = -0.772805284 Simplifying x = -0.772805284

Subproblem 2

x + 40.5 = -39.727194716 Simplifying x + 40.5 = -39.727194716 Reorder the terms: 40.5 + x = -39.727194716 Solving 40.5 + x = -39.727194716 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 = -39.727194716 + -40.5 Combine like terms: 40.5 + -40.5 = 0.0 0.0 + x = -39.727194716 + -40.5 x = -39.727194716 + -40.5 Combine like terms: -39.727194716 + -40.5 = -80.227194716 x = -80.227194716 Simplifying x = -80.227194716

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.772805284, -80.227194716}

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