2*A+A^2=0.1

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Solution for 2*A+A^2=0.1 equation:


Simplifying
2A + A2 = 0.1

Solving
2A + A2 = 0.1

Solving for variable 'A'.

Reorder the terms:
-0.1 + 2A + A2 = 0.1 + -0.1

Combine like terms: 0.1 + -0.1 = 0.0
-0.1 + 2A + A2 = 0.0

Begin completing the square.

Move the constant term to the right:

Add '0.1' to each side of the equation.
-0.1 + 2A + 0.1 + A2 = 0.0 + 0.1

Reorder the terms:
-0.1 + 0.1 + 2A + A2 = 0.0 + 0.1

Combine like terms: -0.1 + 0.1 = 0.0
0.0 + 2A + A2 = 0.0 + 0.1
2A + A2 = 0.0 + 0.1

Combine like terms: 0.0 + 0.1 = 0.1
2A + A2 = 0.1

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 = 0.1 + 1

Reorder the terms:
1 + 2A + A2 = 0.1 + 1

Combine like terms: 0.1 + 1 = 1.1
1 + 2A + A2 = 1.1

Factor a perfect square on the left side:
(A + 1)(A + 1) = 1.1

Calculate the square root of the right side: 1.048808848

Break this problem into two subproblems by setting 
(A + 1) equal to 1.048808848 and -1.048808848.

Subproblem 1

A + 1 = 1.048808848 Simplifying A + 1 = 1.048808848 Reorder the terms: 1 + A = 1.048808848 Solving 1 + A = 1.048808848 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 = 1.048808848 + -1 Combine like terms: 1 + -1 = 0 0 + A = 1.048808848 + -1 A = 1.048808848 + -1 Combine like terms: 1.048808848 + -1 = 0.048808848 A = 0.048808848 Simplifying A = 0.048808848

Subproblem 2

A + 1 = -1.048808848 Simplifying A + 1 = -1.048808848 Reorder the terms: 1 + A = -1.048808848 Solving 1 + A = -1.048808848 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 = -1.048808848 + -1 Combine like terms: 1 + -1 = 0 0 + A = -1.048808848 + -1 A = -1.048808848 + -1 Combine like terms: -1.048808848 + -1 = -2.048808848 A = -2.048808848 Simplifying A = -2.048808848

Solution

The solution to the problem is based on the solutions from the subproblems. A = {0.048808848, -2.048808848}

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