Subject :IMO Class : Class 7
Simplify : 
A 
B 
C 
D 
The answer is 'D'. But sof olympiad trainer has marked my answer wrong and given 'C' as the answer. Could someone please tell me how the answer is 'D'.
Ans 1:
Class : Class 8
answer of this question is c.if it is b then rectify it.
Ans 2:
Class : Class 8
Ans 3:
Class : Class 10
Ans 4:
Class : Class 9
Ans 5:
Class : Class 9
c-3/2
Ans 6:
Class : Class 8
Ans 7:
Class : Class 5
answer should be b. Can you please recheck the calculation ?
Ans 8:
Class : Class 8
Ans 9:
Class : Class 9