exam Maths Puzzle Numerical Ability

y^2+10y+21/y^2+12y+35 please show me how to simplify this expression and how to set it up correctly

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exam Other Question

It takes 1 hour longer to fly to St. Paul at 200 mi/h than it does to return at 250 mi/h. How far away is St. Paul? Find the foci of the graph {{{y^2/25-x^2/49=1}}}. Draw the graph, nam the conic, foci, vertices, asymptotes, and the center.