I'm not sure how to get the set brackets up so here it is without the math bits next to it: Sup {x \in \Re: x^2+4x+1<0} What's the answer?
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Did you graph ? What is the larger of the two roots?
Well I can use the quadratic formula to get . I was just thinking that the answer would be zero since the greatest value of is 0. I can see what I was doing wrong now. cheers!
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