Question

A={x/x is the zero of the polynomial x2(square)-5x+6}
B={x/x is a factor of 42}

find1)A union B

Pls answer with working
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Answer 1

A = { 2 ,3 } and B = { 1,2,3,6,7,14,21,42}
A union B = { 1,2,3,6,7,14,21,42}