A^2-A-14=A

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Solution for A^2-A-14=A equation:


Simplifying
A2 + -1A + -14 = A

Reorder the terms:
-14 + -1A + A2 = A

Solving
-14 + -1A + A2 = A

Solving for variable 'A'.

Reorder the terms:
-14 + -1A + -1A + A2 = A + -1A

Combine like terms: -1A + -1A = -2A
-14 + -2A + A2 = A + -1A

Combine like terms: A + -1A = 0
-14 + -2A + A2 = 0

Begin completing the square.

Move the constant term to the right:

Add '14' to each side of the equation.
-14 + -2A + 14 + A2 = 0 + 14

Reorder the terms:
-14 + 14 + -2A + A2 = 0 + 14

Combine like terms: -14 + 14 = 0
0 + -2A + A2 = 0 + 14
-2A + A2 = 0 + 14

Combine like terms: 0 + 14 = 14
-2A + A2 = 14

The A term is -2A.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2A + 1 + A2 = 14 + 1

Reorder the terms:
1 + -2A + A2 = 14 + 1

Combine like terms: 14 + 1 = 15
1 + -2A + A2 = 15

Factor a perfect square on the left side:
(A + -1)(A + -1) = 15

Calculate the square root of the right side: 3.872983346

Break this problem into two subproblems by setting 
(A + -1) equal to 3.872983346 and -3.872983346.

Subproblem 1

A + -1 = 3.872983346 Simplifying A + -1 = 3.872983346 Reorder the terms: -1 + A = 3.872983346 Solving -1 + A = 3.872983346 Solving for variable 'A'. Move all terms containing A to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + A = 3.872983346 + 1 Combine like terms: -1 + 1 = 0 0 + A = 3.872983346 + 1 A = 3.872983346 + 1 Combine like terms: 3.872983346 + 1 = 4.872983346 A = 4.872983346 Simplifying A = 4.872983346

Subproblem 2

A + -1 = -3.872983346 Simplifying A + -1 = -3.872983346 Reorder the terms: -1 + A = -3.872983346 Solving -1 + A = -3.872983346 Solving for variable 'A'. Move all terms containing A to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + A = -3.872983346 + 1 Combine like terms: -1 + 1 = 0 0 + A = -3.872983346 + 1 A = -3.872983346 + 1 Combine like terms: -3.872983346 + 1 = -2.872983346 A = -2.872983346 Simplifying A = -2.872983346

Solution

The solution to the problem is based on the solutions from the subproblems. A = {4.872983346, -2.872983346}

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