0=x^2+44x-81

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Solution for 0=x^2+44x-81 equation:


Simplifying
0 = x2 + 44x + -81

Reorder the terms:
0 = -81 + 44x + x2

Solving
0 = -81 + 44x + x2

Solving for variable 'x'.

Combine like terms: 0 + 81 = 81
81 + -44x + -1x2 = -81 + 44x + x2 + 81 + -44x + -1x2

Reorder the terms:
81 + -44x + -1x2 = -81 + 81 + 44x + -44x + x2 + -1x2

Combine like terms: -81 + 81 = 0
81 + -44x + -1x2 = 0 + 44x + -44x + x2 + -1x2
81 + -44x + -1x2 = 44x + -44x + x2 + -1x2

Combine like terms: 44x + -44x = 0
81 + -44x + -1x2 = 0 + x2 + -1x2
81 + -44x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
81 + -44x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-81 + 44x + x2 = 0

Move the constant term to the right:

Add '81' to each side of the equation.
-81 + 44x + 81 + x2 = 0 + 81

Reorder the terms:
-81 + 81 + 44x + x2 = 0 + 81

Combine like terms: -81 + 81 = 0
0 + 44x + x2 = 0 + 81
44x + x2 = 0 + 81

Combine like terms: 0 + 81 = 81
44x + x2 = 81

The x term is 44x.  Take half its coefficient (22).
Square it (484) and add it to both sides.

Add '484' to each side of the equation.
44x + 484 + x2 = 81 + 484

Reorder the terms:
484 + 44x + x2 = 81 + 484

Combine like terms: 81 + 484 = 565
484 + 44x + x2 = 565

Factor a perfect square on the left side:
(x + 22)(x + 22) = 565

Calculate the square root of the right side: 23.769728648

Break this problem into two subproblems by setting 
(x + 22) equal to 23.769728648 and -23.769728648.

Subproblem 1

x + 22 = 23.769728648 Simplifying x + 22 = 23.769728648 Reorder the terms: 22 + x = 23.769728648 Solving 22 + x = 23.769728648 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-22' to each side of the equation. 22 + -22 + x = 23.769728648 + -22 Combine like terms: 22 + -22 = 0 0 + x = 23.769728648 + -22 x = 23.769728648 + -22 Combine like terms: 23.769728648 + -22 = 1.769728648 x = 1.769728648 Simplifying x = 1.769728648

Subproblem 2

x + 22 = -23.769728648 Simplifying x + 22 = -23.769728648 Reorder the terms: 22 + x = -23.769728648 Solving 22 + x = -23.769728648 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-22' to each side of the equation. 22 + -22 + x = -23.769728648 + -22 Combine like terms: 22 + -22 = 0 0 + x = -23.769728648 + -22 x = -23.769728648 + -22 Combine like terms: -23.769728648 + -22 = -45.769728648 x = -45.769728648 Simplifying x = -45.769728648

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.769728648, -45.769728648}

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