2a+2(a-80)a+(a-80)=240

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Solution for 2a+2(a-80)a+(a-80)=240 equation:


Simplifying
2a + 2(a + -80) * a + (a + -80) = 240

Reorder the terms:
2a + 2(-80 + a) * a + (a + -80) = 240

Reorder the terms for easier multiplication:
2a + 2a(-80 + a) + (a + -80) = 240
2a + (-80 * 2a + a * 2a) + (a + -80) = 240
2a + (-160a + 2a2) + (a + -80) = 240

Reorder the terms:
2a + -160a + 2a2 + (-80 + a) = 240

Remove parenthesis around (-80 + a)
2a + -160a + 2a2 + -80 + a = 240

Reorder the terms:
-80 + 2a + -160a + a + 2a2 = 240

Combine like terms: 2a + -160a = -158a
-80 + -158a + a + 2a2 = 240

Combine like terms: -158a + a = -157a
-80 + -157a + 2a2 = 240

Solving
-80 + -157a + 2a2 = 240

Solving for variable 'a'.

Reorder the terms:
-80 + -240 + -157a + 2a2 = 240 + -240

Combine like terms: -80 + -240 = -320
-320 + -157a + 2a2 = 240 + -240

Combine like terms: 240 + -240 = 0
-320 + -157a + 2a2 = 0

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

Divide each side by '2'.
-160 + -78.5a + a2 = 0

Move the constant term to the right:

Add '160' to each side of the equation.
-160 + -78.5a + 160 + a2 = 0 + 160

Reorder the terms:
-160 + 160 + -78.5a + a2 = 0 + 160

Combine like terms: -160 + 160 = 0
0 + -78.5a + a2 = 0 + 160
-78.5a + a2 = 0 + 160

Combine like terms: 0 + 160 = 160
-78.5a + a2 = 160

The a term is -78.5a.  Take half its coefficient (-39.25).
Square it (1540.5625) and add it to both sides.

Add '1540.5625' to each side of the equation.
-78.5a + 1540.5625 + a2 = 160 + 1540.5625

Reorder the terms:
1540.5625 + -78.5a + a2 = 160 + 1540.5625

Combine like terms: 160 + 1540.5625 = 1700.5625
1540.5625 + -78.5a + a2 = 1700.5625

Factor a perfect square on the left side:
(a + -39.25)(a + -39.25) = 1700.5625

Calculate the square root of the right side: 41.237877006

Break this problem into two subproblems by setting 
(a + -39.25) equal to 41.237877006 and -41.237877006.

Subproblem 1

a + -39.25 = 41.237877006 Simplifying a + -39.25 = 41.237877006 Reorder the terms: -39.25 + a = 41.237877006 Solving -39.25 + a = 41.237877006 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '39.25' to each side of the equation. -39.25 + 39.25 + a = 41.237877006 + 39.25 Combine like terms: -39.25 + 39.25 = 0.00 0.00 + a = 41.237877006 + 39.25 a = 41.237877006 + 39.25 Combine like terms: 41.237877006 + 39.25 = 80.487877006 a = 80.487877006 Simplifying a = 80.487877006

Subproblem 2

a + -39.25 = -41.237877006 Simplifying a + -39.25 = -41.237877006 Reorder the terms: -39.25 + a = -41.237877006 Solving -39.25 + a = -41.237877006 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '39.25' to each side of the equation. -39.25 + 39.25 + a = -41.237877006 + 39.25 Combine like terms: -39.25 + 39.25 = 0.00 0.00 + a = -41.237877006 + 39.25 a = -41.237877006 + 39.25 Combine like terms: -41.237877006 + 39.25 = -1.987877006 a = -1.987877006 Simplifying a = -1.987877006

Solution

The solution to the problem is based on the solutions from the subproblems. a = {80.487877006, -1.987877006}

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