4a-(a-2)=2a(3a-2)

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Solution for 4a-(a-2)=2a(3a-2) equation:


Simplifying
4a + -1(a + -2) = 2a(3a + -2)

Reorder the terms:
4a + -1(-2 + a) = 2a(3a + -2)
4a + (-2 * -1 + a * -1) = 2a(3a + -2)
4a + (2 + -1a) = 2a(3a + -2)

Reorder the terms:
2 + 4a + -1a = 2a(3a + -2)

Combine like terms: 4a + -1a = 3a
2 + 3a = 2a(3a + -2)

Reorder the terms:
2 + 3a = 2a(-2 + 3a)
2 + 3a = (-2 * 2a + 3a * 2a)
2 + 3a = (-4a + 6a2)

Solving
2 + 3a = -4a + 6a2

Solving for variable 'a'.

Combine like terms: 3a + 4a = 7a
2 + 7a + -6a2 = -4a + 6a2 + 4a + -6a2

Reorder the terms:
2 + 7a + -6a2 = -4a + 4a + 6a2 + -6a2

Combine like terms: -4a + 4a = 0
2 + 7a + -6a2 = 0 + 6a2 + -6a2
2 + 7a + -6a2 = 6a2 + -6a2

Combine like terms: 6a2 + -6a2 = 0
2 + 7a + -6a2 = 0

Begin completing the square.  Divide all terms by
-6 the coefficient of the squared term: 

Divide each side by '-6'.
-0.3333333333 + -1.166666667a + a2 = 0

Move the constant term to the right:

Add '0.3333333333' to each side of the equation.
-0.3333333333 + -1.166666667a + 0.3333333333 + a2 = 0 + 0.3333333333

Reorder the terms:
-0.3333333333 + 0.3333333333 + -1.166666667a + a2 = 0 + 0.3333333333

Combine like terms: -0.3333333333 + 0.3333333333 = 0.0000000000
0.0000000000 + -1.166666667a + a2 = 0 + 0.3333333333
-1.166666667a + a2 = 0 + 0.3333333333

Combine like terms: 0 + 0.3333333333 = 0.3333333333
-1.166666667a + a2 = 0.3333333333

The a term is -1.166666667a.  Take half its coefficient (-0.5833333335).
Square it (0.3402777780) and add it to both sides.

Add '0.3402777780' to each side of the equation.
-1.166666667a + 0.3402777780 + a2 = 0.3333333333 + 0.3402777780

Reorder the terms:
0.3402777780 + -1.166666667a + a2 = 0.3333333333 + 0.3402777780

Combine like terms: 0.3333333333 + 0.3402777780 = 0.6736111113
0.3402777780 + -1.166666667a + a2 = 0.6736111113

Factor a perfect square on the left side:
(a + -0.5833333335)(a + -0.5833333335) = 0.6736111113

Calculate the square root of the right side: 0.82073815

Break this problem into two subproblems by setting 
(a + -0.5833333335) equal to 0.82073815 and -0.82073815.

Subproblem 1

a + -0.5833333335 = 0.82073815 Simplifying a + -0.5833333335 = 0.82073815 Reorder the terms: -0.5833333335 + a = 0.82073815 Solving -0.5833333335 + a = 0.82073815 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '0.5833333335' to each side of the equation. -0.5833333335 + 0.5833333335 + a = 0.82073815 + 0.5833333335 Combine like terms: -0.5833333335 + 0.5833333335 = 0.0000000000 0.0000000000 + a = 0.82073815 + 0.5833333335 a = 0.82073815 + 0.5833333335 Combine like terms: 0.82073815 + 0.5833333335 = 1.4040714835 a = 1.4040714835 Simplifying a = 1.4040714835

Subproblem 2

a + -0.5833333335 = -0.82073815 Simplifying a + -0.5833333335 = -0.82073815 Reorder the terms: -0.5833333335 + a = -0.82073815 Solving -0.5833333335 + a = -0.82073815 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '0.5833333335' to each side of the equation. -0.5833333335 + 0.5833333335 + a = -0.82073815 + 0.5833333335 Combine like terms: -0.5833333335 + 0.5833333335 = 0.0000000000 0.0000000000 + a = -0.82073815 + 0.5833333335 a = -0.82073815 + 0.5833333335 Combine like terms: -0.82073815 + 0.5833333335 = -0.2374048165 a = -0.2374048165 Simplifying a = -0.2374048165

Solution

The solution to the problem is based on the solutions from the subproblems. a = {1.4040714835, -0.2374048165}

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