If Alpha and Beta are the zeroes of the polynomial p(x)=x^2-5x+4 find the value of 1/alpha + 1/beta - 2× alpha× Beta​

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.