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What is the highest unclimbed mountain that is not in Bhutan? For what values of x is (x-2)(x-3)(x-4)(x-5) < 8? Please help quick? Why is the curl of a vector field F not orthogonal to F? How do I prove (with calculus) m=-b/(2a) (the formula for finding maxs and mins)? How many valence electrons does Ne have?