First slide
Operations on Sets
Question

If A={x : xR and satisfy x215x+56=0

B={x : xN and x+514} and C={x : xN and x/112}.

Then A(BC) is equal to 

Moderate
Solution

A = {7,8},B={1,2,3,.9}C = {1,2,4,7,8,14,16,}BC = {1,2,4,7,8}A(BC) = {1,2,4,7,8}

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