a^2=11a-81

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Solution for a^2=11a-81 equation:


Simplifying
a2 = 11a + -81

Reorder the terms:
a2 = -81 + 11a

Solving
a2 = -81 + 11a

Solving for variable 'a'.

Reorder the terms:
81 + -11a + a2 = -81 + 11a + 81 + -11a

Reorder the terms:
81 + -11a + a2 = -81 + 81 + 11a + -11a

Combine like terms: -81 + 81 = 0
81 + -11a + a2 = 0 + 11a + -11a
81 + -11a + a2 = 11a + -11a

Combine like terms: 11a + -11a = 0
81 + -11a + a2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-81' to each side of the equation.
81 + -11a + -81 + a2 = 0 + -81

Reorder the terms:
81 + -81 + -11a + a2 = 0 + -81

Combine like terms: 81 + -81 = 0
0 + -11a + a2 = 0 + -81
-11a + a2 = 0 + -81

Combine like terms: 0 + -81 = -81
-11a + a2 = -81

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 = -81 + 30.25

Reorder the terms:
30.25 + -11a + a2 = -81 + 30.25

Combine like terms: -81 + 30.25 = -50.75
30.25 + -11a + a2 = -50.75

Factor a perfect square on the left side:
(a + -5.5)(a + -5.5) = -50.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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