What are the steps to simplify the expression (4+6i)(4−6i)?

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu

Extra points! find the missing dimension! need asap