v*v-2v=3

Solution for v*v-2v=3 equation:

Simplifying
v * v + -2v = 3

Multiply v * v
v2 + -2v = 3

Reorder the terms:
-2v + v2 = 3

Solving
-2v + v2 = 3

Solving for variable 'v'.

Reorder the terms:
-3 + -2v + v2 = 3 + -3

Combine like terms: 3 + -3 = 0
-3 + -2v + v2 = 0

Factor a trinomial.
(-1 + -1v)(3 + -1v) = 0

Subproblem 1
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
Subproblem 2
Set the factor '(3 + -1v)' equal to zero and attempt to solve:

Simplifying
3 + -1v = 0

Solving
3 + -1v = 0

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

Add '-3' to each side of the equation.
3 + -3 + -1v = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -1v = 0 + -3
-1v = 0 + -3

Combine like terms: 0 + -3 = -3
-1v = -3

Divide each side by '-1'.
v = 3

Simplifying
v = 3
Solution
v = {-1, 3}