a*a-11a+2=0

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Solution for a*a-11a+2=0 equation:


Simplifying
a * a + -11a + 2 = 0

Multiply a * a
a2 + -11a + 2 = 0

Reorder the terms:
2 + -11a + a2 = 0

Solving
2 + -11a + a2 = 0

Solving for variable 'a'.

Begin completing the square.

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + -11a + -2 + a2 = 0 + -2

Reorder the terms:
2 + -2 + -11a + a2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -11a + a2 = 0 + -2
-11a + a2 = 0 + -2

Combine like terms: 0 + -2 = -2
-11a + a2 = -2

The a term is -11a.  Take half its coefficient (-5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
-11a + 30.25 + a2 = -2 + 30.25

Reorder the terms:
30.25 + -11a + a2 = -2 + 30.25

Combine like terms: -2 + 30.25 = 28.25
30.25 + -11a + a2 = 28.25

Factor a perfect square on the left side:
(a + -5.5)(a + -5.5) = 28.25

Calculate the square root of the right side: 5.315072906

Break this problem into two subproblems by setting 
(a + -5.5) equal to 5.315072906 and -5.315072906.

Subproblem 1

a + -5.5 = 5.315072906 Simplifying a + -5.5 = 5.315072906 Reorder the terms: -5.5 + a = 5.315072906 Solving -5.5 + a = 5.315072906 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + a = 5.315072906 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + a = 5.315072906 + 5.5 a = 5.315072906 + 5.5 Combine like terms: 5.315072906 + 5.5 = 10.815072906 a = 10.815072906 Simplifying a = 10.815072906

Subproblem 2

a + -5.5 = -5.315072906 Simplifying a + -5.5 = -5.315072906 Reorder the terms: -5.5 + a = -5.315072906 Solving -5.5 + a = -5.315072906 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + a = -5.315072906 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + a = -5.315072906 + 5.5 a = -5.315072906 + 5.5 Combine like terms: -5.315072906 + 5.5 = 0.184927094 a = 0.184927094 Simplifying a = 0.184927094

Solution

The solution to the problem is based on the solutions from the subproblems. a = {10.815072906, 0.184927094}

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