Find the zeros of the polynomial
(5x-2)(x2-1)

Each of the parentheses should be set to zero to find both zeroes.
You end up with 2/5 and 1/2

The major difference is that a histogram is only used to plot the frequency of score occurrences in a continuous data set that has been divided into classes, called bins.  bar charts, on the other hand, can be used for a great deal of other types ofvariables  including  ordinal  andnominal  data sets.