a*2=(a^2)+99

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Solution for a*2=(a^2)+99 equation:


Simplifying
a * 2 = (a2) + 99

Reorder the terms for easier multiplication:
2a = (a2) + 99
2a = a2 + 99

Reorder the terms:
2a = 99 + a2

Solving
2a = 99 + a2

Solving for variable 'a'.

Reorder the terms:
-99 + 2a + -1a2 = 99 + a2 + -99 + -1a2

Reorder the terms:
-99 + 2a + -1a2 = 99 + -99 + a2 + -1a2

Combine like terms: 99 + -99 = 0
-99 + 2a + -1a2 = 0 + a2 + -1a2
-99 + 2a + -1a2 = a2 + -1a2

Combine like terms: a2 + -1a2 = 0
-99 + 2a + -1a2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
99 + -2a + a2 = 0

Move the constant term to the right:

Add '-99' to each side of the equation.
99 + -2a + -99 + a2 = 0 + -99

Reorder the terms:
99 + -99 + -2a + a2 = 0 + -99

Combine like terms: 99 + -99 = 0
0 + -2a + a2 = 0 + -99
-2a + a2 = 0 + -99

Combine like terms: 0 + -99 = -99
-2a + a2 = -99

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 = -99 + 1

Reorder the terms:
1 + -2a + a2 = -99 + 1

Combine like terms: -99 + 1 = -98
1 + -2a + a2 = -98

Factor a perfect square on the left side:
(a + -1)(a + -1) = -98

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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