Question

determine::
√16x5-3x5+100:5²-1 ?

Answer 1

√16x5-3x5+100:5²-1
  4X5 - 15 + 100: 25 - 1
  20 - 15 + 4 - 1
       5 + 3
       8

Answer 2

=√16.5-3.5+100-25-1
=√80-15+4-1
=√65+5-1
=√69-1
=√68
=8,24