a(a+1)-(a-3)=

Solution for a(a+1)-(a-3)= equation:

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

Reorder the terms:
a(1 + a) + -1(a + -3) = 0
(1 * a + a * a) + -1(a + -3) = 0
(1a + a2) + -1(a + -3) = 0

Reorder the terms:
1a + a2 + -1(-3 + a) = 0
1a + a2 + (-3 * -1 + a * -1) = 0
1a + a2 + (3 + -1a) = 0

Reorder the terms:
3 + 1a + -1a + a2 = 0

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

Solving
3 + a2 = 0

Solving for variable 'a'.

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

Add '-3' to each side of the equation.
3 + -3 + a2 = 0 + -3

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

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

Simplifying
a2 = -3

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

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

The solution to this equation could not be determined.