Square numbers are numbers with an odd number of factors. For example, 1 and 4 are square numbers.
Mark will swim 182.88 meters
2i(4+5i)(4-5i) =82i
4+i nothing more can be done it is at simplest form
so

=

so your answer is
Answer:
j = 2z + 1
jennifer is one year older or jennifer is plus one.
twice zacks age or two times zacks age.
jennifer's age is two times zacks age plus one or
j = 2z + 1