Question

][(2³. 5)-²/(2 . 5-²)4]-¹ =

Answer 1

[(2³. 5)⁻²/(2 . 5⁻²). 4]⁻¹ =

[(8.5)⁻² /(2.1/25).4]⁻¹ =

[ 40⁻² / (2/25) . 4]⁻¹ =

[1/1600  x 25/2 . 4]⁻¹ =

  1  x  25  x  4
[ ___________]⁻¹ =
   1600 x 2

       100
   [ _____ ]⁻¹ =
    1600x2

         1
   [ ______ ]⁻¹ =
       16 x 2

         1
  [   _____ ]⁻¹ = 32¹ = 32
         32