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Question: Union of two sets of solution

Question:Union of two sets of solution

toandhsp 300 Maple
set
February 22 2012
2

Let S1 be the set of solutions of the inequalities x^2+ 3*x + 2 >0 and S2  be the set of solutions of the inequalities x^2 - 9>=0. I want to the set S1 union S2. What must i do? Please help me. 
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