(x+1)*(x-5)=0

Solution for (x+1)*(x-5)=0 equation:

Simplifying
(x + 1)(x + -5) = 0

Reorder the terms:
(1 + x)(x + -5) = 0

Reorder the terms:
(1 + x)(-5 + x) = 0

Multiply (1 + x) * (-5 + x)
(1(-5 + x) + x(-5 + x)) = 0
((-5 * 1 + x * 1) + x(-5 + x)) = 0
((-5 + 1x) + x(-5 + x)) = 0
(-5 + 1x + (-5 * x + x * x)) = 0
(-5 + 1x + (-5x + x2)) = 0

Combine like terms: 1x + -5x = -4x
(-5 + -4x + x2) = 0

Solving
-5 + -4x + x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-1 + -1x)(5 + -1x) = 0

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

Simplifying
-1 + -1x = 0

Solving
-1 + -1x = 0

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

Add '1' to each side of the equation.
-1 + 1 + -1x = 0 + 1

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

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

Divide each side by '-1'.
x = -1

Simplifying
x = -1
Subproblem 2
Set the factor '(5 + -1x)' equal to zero and attempt to solve:

Simplifying
5 + -1x = 0

Solving
5 + -1x = 0

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

Add '-5' to each side of the equation.
5 + -5 + -1x = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -1x = 0 + -5
-1x = 0 + -5

Combine like terms: 0 + -5 = -5
-1x = -5

Divide each side by '-1'.
x = 5

Simplifying
x = 5
Solution
x = {-1, 5}