1.

p @ q = p^2 - 20 if p > q , q 2 q = p^2 + 20 if p le q, then for a = 5 and b = 4 the value of [(a @ b) @ (a @ b)] - [(b @ a) @ (b @ a)] is :

Answer»

416
-461
-1271
none of these

Solution :`[5@4)@(5@4)]-[(4@5)@(4@5)]
= [5 @ 5) - (36@36)] = 45-1316 = -1271


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