17=4(a-2)*2a

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Solution for 17=4(a-2)*2a equation:


Simplifying
17 = 4(a + -2) * 2a

Reorder the terms:
17 = 4(-2 + a) * 2a

Reorder the terms for easier multiplication:
17 = 4 * 2a(-2 + a)

Multiply 4 * 2
17 = 8a(-2 + a)
17 = (-2 * 8a + a * 8a)
17 = (-16a + 8a2)

Solving
17 = -16a + 8a2

Solving for variable 'a'.

Reorder the terms:
17 + 16a + -8a2 = -16a + 16a + 8a2 + -8a2

Combine like terms: -16a + 16a = 0
17 + 16a + -8a2 = 0 + 8a2 + -8a2
17 + 16a + -8a2 = 8a2 + -8a2

Combine like terms: 8a2 + -8a2 = 0
17 + 16a + -8a2 = 0

Begin completing the square.  Divide all terms by
-8 the coefficient of the squared term: 

Divide each side by '-8'.
-2.125 + -2a + a2 = 0

Move the constant term to the right:

Add '2.125' to each side of the equation.
-2.125 + -2a + 2.125 + a2 = 0 + 2.125

Reorder the terms:
-2.125 + 2.125 + -2a + a2 = 0 + 2.125

Combine like terms: -2.125 + 2.125 = 0.000
0.000 + -2a + a2 = 0 + 2.125
-2a + a2 = 0 + 2.125

Combine like terms: 0 + 2.125 = 2.125
-2a + a2 = 2.125

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 = 2.125 + 1

Reorder the terms:
1 + -2a + a2 = 2.125 + 1

Combine like terms: 2.125 + 1 = 3.125
1 + -2a + a2 = 3.125

Factor a perfect square on the left side:
(a + -1)(a + -1) = 3.125

Calculate the square root of the right side: 1.767766953

Break this problem into two subproblems by setting 
(a + -1) equal to 1.767766953 and -1.767766953.

Subproblem 1

a + -1 = 1.767766953 Simplifying a + -1 = 1.767766953 Reorder the terms: -1 + a = 1.767766953 Solving -1 + a = 1.767766953 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 = 1.767766953 + 1 Combine like terms: -1 + 1 = 0 0 + a = 1.767766953 + 1 a = 1.767766953 + 1 Combine like terms: 1.767766953 + 1 = 2.767766953 a = 2.767766953 Simplifying a = 2.767766953

Subproblem 2

a + -1 = -1.767766953 Simplifying a + -1 = -1.767766953 Reorder the terms: -1 + a = -1.767766953 Solving -1 + a = -1.767766953 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 = -1.767766953 + 1 Combine like terms: -1 + 1 = 0 0 + a = -1.767766953 + 1 a = -1.767766953 + 1 Combine like terms: -1.767766953 + 1 = -0.767766953 a = -0.767766953 Simplifying a = -0.767766953

Solution

The solution to the problem is based on the solutions from the subproblems. a = {2.767766953, -0.767766953}

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