a^2-2a-244=0

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Solution for a^2-2a-244=0 equation:


Simplifying
a2 + -2a + -244 = 0

Reorder the terms:
-244 + -2a + a2 = 0

Solving
-244 + -2a + a2 = 0

Solving for variable 'a'.

Begin completing the square.

Move the constant term to the right:

Add '244' to each side of the equation.
-244 + -2a + 244 + a2 = 0 + 244

Reorder the terms:
-244 + 244 + -2a + a2 = 0 + 244

Combine like terms: -244 + 244 = 0
0 + -2a + a2 = 0 + 244
-2a + a2 = 0 + 244

Combine like terms: 0 + 244 = 244
-2a + a2 = 244

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 = 244 + 1

Reorder the terms:
1 + -2a + a2 = 244 + 1

Combine like terms: 244 + 1 = 245
1 + -2a + a2 = 245

Factor a perfect square on the left side:
(a + -1)(a + -1) = 245

Calculate the square root of the right side: 15.652475842

Break this problem into two subproblems by setting 
(a + -1) equal to 15.652475842 and -15.652475842.

Subproblem 1

a + -1 = 15.652475842 Simplifying a + -1 = 15.652475842 Reorder the terms: -1 + a = 15.652475842 Solving -1 + a = 15.652475842 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 = 15.652475842 + 1 Combine like terms: -1 + 1 = 0 0 + a = 15.652475842 + 1 a = 15.652475842 + 1 Combine like terms: 15.652475842 + 1 = 16.652475842 a = 16.652475842 Simplifying a = 16.652475842

Subproblem 2

a + -1 = -15.652475842 Simplifying a + -1 = -15.652475842 Reorder the terms: -1 + a = -15.652475842 Solving -1 + a = -15.652475842 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 = -15.652475842 + 1 Combine like terms: -1 + 1 = 0 0 + a = -15.652475842 + 1 a = -15.652475842 + 1 Combine like terms: -15.652475842 + 1 = -14.652475842 a = -14.652475842 Simplifying a = -14.652475842

Solution

The solution to the problem is based on the solutions from the subproblems. a = {16.652475842, -14.652475842}

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