If A=[2−39] , B=[0−12] and C=[−2−86], find A+B-C
[44−5]
[4−45]
[445]
[−445]
A+B=[2−39]+[0−12]=[2−411]
A+B−C=[2−411]−[−2−86]=[445]
What is the general term in the expansion of (2y-4x)44?