Let f ={ (-6,4),(-5,3),(4,-6),(3,-5),(1,5),(2,6),(-3,5),(-8,2),(6,4)}  g= {(-6,2),(-5,-4),(3,5),(1,-7),(-2,3),(-3,-5),(-8,5),(6,-2)} Find (a) f – g (b) f.g

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