a^2+1=-2a

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

Simplifying
a2 + 1 = -2a

Reorder the terms:
1 + a2 = -2a

Solving
1 + a2 = -2a

Solving for variable 'a'.

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

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

Factor a trinomial.
(1 + a)(1 + a) = 0

Subproblem 1
Set the factor '(1 + a)' equal to zero and attempt to solve:

Simplifying
1 + a = 0

Solving
1 + a = 0

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 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + a = 0 + -1
a = 0 + -1

Combine like terms: 0 + -1 = -1
a = -1

Simplifying
a = -1
Subproblem 2
Set the factor '(1 + a)' equal to zero and attempt to solve:

Simplifying
1 + a = 0

Solving
1 + a = 0

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 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + a = 0 + -1
a = 0 + -1

Combine like terms: 0 + -1 = -1
a = -1

Simplifying
a = -1
Solution
a = {-1, -1}