Question

v(v-4)=0

Answer 1

what values of v make it equal to zero?

Answer 2

@Kuoministers You don't need to expand.....

Answer 3

yea just relised

Answer 4

you need to solve?
note if a*b = 0 either a or b is zero
so you need to find what makes this zero.
x(x-4) = 0
so we have x = 0 and x-4 = 0 so
x=0 and x = 4