(V-1)(V+8)=

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


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

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

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

Multiply (-1 + V) * (8 + V)
(-1(8 + V) + V(8 + V)) = 0
((8 * -1 + V * -1) + V(8 + V)) = 0
((-8 + -1V) + V(8 + V)) = 0
(-8 + -1V + (8 * V + V * V)) = 0
(-8 + -1V + (8V + V2)) = 0

Combine like terms: -1V + 8V = 7V
(-8 + 7V + V2) = 0

Solving
-8 + 7V + V2 = 0

Solving for variable 'V'.

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


Subproblem 1
Set the factor '(-8 + -1V)' equal to zero and attempt to solve:

Simplifying
-8 + -1V = 0

Solving
-8 + -1V = 0

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

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

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

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

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

Simplifying
V = -8

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

Simplifying
1 + -1V = 0

Solving
1 + -1V = 0

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

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

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

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

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

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

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