=3a-(-a^2)

Solution for =3a-(-a^2) equation:

Simplifying
0 = 3a + -1(-1a2)

Remove parenthesis around (-1a2)
0 = 3a + -1 * -1a2

Multiply -1 * -1
0 = 3a + 1a2

Solving
0 = 3a + 1a2

Solving for variable 'a'.
Remove the zero:
-3a + -1a2 = 3a + 1a2 + -3a + -1a2

Reorder the terms:
-3a + -1a2 = 3a + -3a + 1a2 + -1a2

Combine like terms: 3a + -3a = 0
-3a + -1a2 = 0 + 1a2 + -1a2
-3a + -1a2 = 1a2 + -1a2

Combine like terms: 1a2 + -1a2 = 0
-3a + -1a2 = 0

Factor out the Greatest Common Factor (GCF), '-1a'.
-1a(3 + a) = 0

Ignore the factor -1.
Subproblem 1
Set the factor 'a' equal to zero and attempt to solve:

Simplifying
a = 0

Solving
a = 0

Move all terms containing a to the left, all other terms to the right.

Simplifying
a = 0
Subproblem 2
Set the factor '(3 + a)' equal to zero and attempt to solve:

Simplifying
3 + a = 0

Solving
3 + a = 0

Move all terms containing a to the left, all other terms to the right.

Add '-3' to each side of the equation.
3 + -3 + a = 0 + -3

Combine like terms: 3 + -3 = 0
0 + a = 0 + -3
a = 0 + -3

Combine like terms: 0 + -3 = -3
a = -3

Simplifying
a = -3
Solution
a = {0, -3}