10=1+1-2a-a^2

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Solution for 10=1+1-2a-a^2 equation:


Simplifying
10 = 1 + 1 + -2a + -1a2

Combine like terms: 1 + 1 = 2
10 = 2 + -2a + -1a2

Solving
10 = 2 + -2a + -1a2

Solving for variable 'a'.

Combine like terms: 10 + -2 = 8
8 + 2a + a2 = 2 + -2a + -1a2 + -2 + 2a + a2

Reorder the terms:
8 + 2a + a2 = 2 + -2 + -2a + 2a + -1a2 + a2

Combine like terms: 2 + -2 = 0
8 + 2a + a2 = 0 + -2a + 2a + -1a2 + a2
8 + 2a + a2 = -2a + 2a + -1a2 + a2

Combine like terms: -2a + 2a = 0
8 + 2a + a2 = 0 + -1a2 + a2
8 + 2a + a2 = -1a2 + a2

Combine like terms: -1a2 + a2 = 0
8 + 2a + a2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-8' to each side of the equation.
8 + 2a + -8 + a2 = 0 + -8

Reorder the terms:
8 + -8 + 2a + a2 = 0 + -8

Combine like terms: 8 + -8 = 0
0 + 2a + a2 = 0 + -8
2a + a2 = 0 + -8

Combine like terms: 0 + -8 = -8
2a + a2 = -8

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 = -8 + 1

Reorder the terms:
1 + 2a + a2 = -8 + 1

Combine like terms: -8 + 1 = -7
1 + 2a + a2 = -7

Factor a perfect square on the left side:
(a + 1)(a + 1) = -7

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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