A^2-10A+23=0

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Solution for A^2-10A+23=0 equation:


Simplifying
A2 + -10A + 23 = 0

Reorder the terms:
23 + -10A + A2 = 0

Solving
23 + -10A + A2 = 0

Solving for variable 'A'.

Begin completing the square.

Move the constant term to the right:

Add '-23' to each side of the equation.
23 + -10A + -23 + A2 = 0 + -23

Reorder the terms:
23 + -23 + -10A + A2 = 0 + -23

Combine like terms: 23 + -23 = 0
0 + -10A + A2 = 0 + -23
-10A + A2 = 0 + -23

Combine like terms: 0 + -23 = -23
-10A + A2 = -23

The A term is -10A.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10A + 25 + A2 = -23 + 25

Reorder the terms:
25 + -10A + A2 = -23 + 25

Combine like terms: -23 + 25 = 2
25 + -10A + A2 = 2

Factor a perfect square on the left side:
(A + -5)(A + -5) = 2

Calculate the square root of the right side: 1.414213562

Break this problem into two subproblems by setting 
(A + -5) equal to 1.414213562 and -1.414213562.

Subproblem 1

A + -5 = 1.414213562 Simplifying A + -5 = 1.414213562 Reorder the terms: -5 + A = 1.414213562 Solving -5 + A = 1.414213562 Solving for variable 'A'. Move all terms containing A to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + A = 1.414213562 + 5 Combine like terms: -5 + 5 = 0 0 + A = 1.414213562 + 5 A = 1.414213562 + 5 Combine like terms: 1.414213562 + 5 = 6.414213562 A = 6.414213562 Simplifying A = 6.414213562

Subproblem 2

A + -5 = -1.414213562 Simplifying A + -5 = -1.414213562 Reorder the terms: -5 + A = -1.414213562 Solving -5 + A = -1.414213562 Solving for variable 'A'. Move all terms containing A to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + A = -1.414213562 + 5 Combine like terms: -5 + 5 = 0 0 + A = -1.414213562 + 5 A = -1.414213562 + 5 Combine like terms: -1.414213562 + 5 = 3.585786438 A = 3.585786438 Simplifying A = 3.585786438

Solution

The solution to the problem is based on the solutions from the subproblems. A = {6.414213562, 3.585786438}

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