(w+1)(w-8)=

Solution for (w+1)(w-8)= equation:

Simplifying
(w + 1)(w + -8) = 0

Reorder the terms:
(1 + w)(w + -8) = 0

Reorder the terms:
(1 + w)(-8 + w) = 0

Multiply (1 + w) * (-8 + w)
(1(-8 + w) + w(-8 + w)) = 0
((-8 * 1 + w * 1) + w(-8 + w)) = 0
((-8 + 1w) + w(-8 + w)) = 0
(-8 + 1w + (-8 * w + w * w)) = 0
(-8 + 1w + (-8w + w2)) = 0

Combine like terms: 1w + -8w = -7w
(-8 + -7w + w2) = 0

Solving
-8 + -7w + w2 = 0

Solving for variable 'w'.

Factor a trinomial.
(-1 + -1w)(8 + -1w) = 0

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

Simplifying
-1 + -1w = 0

Solving
-1 + -1w = 0

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

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

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

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

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

Simplifying
w = -1
Subproblem 2
Set the factor '(8 + -1w)' equal to zero and attempt to solve:

Simplifying
8 + -1w = 0

Solving
8 + -1w = 0

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

Add '-8' to each side of the equation.
8 + -8 + -1w = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -1w = 0 + -8
-1w = 0 + -8

Combine like terms: 0 + -8 = -8
-1w = -8

Divide each side by '-1'.
w = 8

Simplifying
w = 8
Solution
w = {-1, 8}