Question

solve the following
evaluate 995²

Answer 1

995*995=990025 hopefully it's ok
100*99=9900
add25in last got
990025

Answer 2

995^2=(1000-5)^2


=1000^2+5^2-2 x 1000 x 5


=1000000+25-10000

=1000025-10000

=990025