Question

[(1 / 2)^-1 + (2 /3 )^2 - (3/4)^0]^-2 is equal to: I. 81/484 II. 81/169 III. 169/81 IV. 16/81

Answer 1

Answer:

81/169

Step-by-step explanation:

[2+4/9-1]^-2

= [1+4/9]^-2

= [9+4/9]^-2

= (13/9)^-2

= (9/13)^2

= 81/169

Answer 2

Answer:

II

Step-by-step explanation:

=[(2/1)^1+(2/3)^2-1]^-2

=(2/1+4/9-1)^-2 {BODMAS RULE}

=(22/9-1/1)^-2

=(13/9)^-2

=(9/13)^2

=81/169