a) [192 - (45 : 15) ^4 ] = [192 - (3)^4]
= [192 - 81]
= 111
a) [192 - ( 45 : 15)4 ]
= 192 - 34
= 192 - 81
= 110
b) [ (192 - 45 : 15) : 3)2 ]
= [ (192 - 45 : 15) : 3)2 ]
= [ (192 - 3) : 3)2
= (189 : 3)2
= 632
= 3969
b) [ (192 - 45 : 15) : 3)^2 ]
= [ ( 192- 3) :3 ) ^2 ]
= [ ( 189 :3 )^2 ]
= [ ( 63)^2 ]
= 3969
b) [ (192 - 45 : 15) : 3)2 ]
= [(192 - 3) : 3)2]
= [ (189 : 3)2]
= 632
= 3969
