Question

Show that none of the following is a perfect square. Give reason

5678​

Answer 1

First think about that what is the possible square of this 5678

it is 75.35

now try 75^2=5625

5678-5625=53

now use

76^2=5776

5776-5678=98

so we require 98 to become a perfect square

and substrate 53 to get a perfect square.

for add ur answer is

98