a(a-2)=(a+5)-(a+3)

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Solution for a(a-2)=(a+5)-(a+3) equation:


Simplifying
a(a + -2) = (a + 5) + -1(a + 3)

Reorder the terms:
a(-2 + a) = (a + 5) + -1(a + 3)
(-2 * a + a * a) = (a + 5) + -1(a + 3)
(-2a + a2) = (a + 5) + -1(a + 3)

Reorder the terms:
-2a + a2 = (5 + a) + -1(a + 3)

Remove parenthesis around (5 + a)
-2a + a2 = 5 + a + -1(a + 3)

Reorder the terms:
-2a + a2 = 5 + a + -1(3 + a)
-2a + a2 = 5 + a + (3 * -1 + a * -1)
-2a + a2 = 5 + a + (-3 + -1a)

Reorder the terms:
-2a + a2 = 5 + -3 + a + -1a

Combine like terms: 5 + -3 = 2
-2a + a2 = 2 + a + -1a

Combine like terms: a + -1a = 0
-2a + a2 = 2 + 0
-2a + a2 = 2

Solving
-2a + a2 = 2

Solving for variable 'a'.

Reorder the terms:
-2 + -2a + a2 = 2 + -2

Combine like terms: 2 + -2 = 0
-2 + -2a + a2 = 0

Begin completing the square.

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + -2a + 2 + a2 = 0 + 2

Reorder the terms:
-2 + 2 + -2a + a2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -2a + a2 = 0 + 2
-2a + a2 = 0 + 2

Combine like terms: 0 + 2 = 2
-2a + a2 = 2

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 = 2 + 1

Reorder the terms:
1 + -2a + a2 = 2 + 1

Combine like terms: 2 + 1 = 3
1 + -2a + a2 = 3

Factor a perfect square on the left side:
(a + -1)(a + -1) = 3

Calculate the square root of the right side: 1.732050808

Break this problem into two subproblems by setting 
(a + -1) equal to 1.732050808 and -1.732050808.

Subproblem 1

a + -1 = 1.732050808 Simplifying a + -1 = 1.732050808 Reorder the terms: -1 + a = 1.732050808 Solving -1 + a = 1.732050808 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 = 1.732050808 + 1 Combine like terms: -1 + 1 = 0 0 + a = 1.732050808 + 1 a = 1.732050808 + 1 Combine like terms: 1.732050808 + 1 = 2.732050808 a = 2.732050808 Simplifying a = 2.732050808

Subproblem 2

a + -1 = -1.732050808 Simplifying a + -1 = -1.732050808 Reorder the terms: -1 + a = -1.732050808 Solving -1 + a = -1.732050808 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 = -1.732050808 + 1 Combine like terms: -1 + 1 = 0 0 + a = -1.732050808 + 1 a = -1.732050808 + 1 Combine like terms: -1.732050808 + 1 = -0.732050808 a = -0.732050808 Simplifying a = -0.732050808

Solution

The solution to the problem is based on the solutions from the subproblems. a = {2.732050808, -0.732050808}

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