exam Maths Puzzle Numerical Ability

Can someone help me divide this rational expression?

x^2+2x-15/4x^2 Divided by x^2-25/2x-10

Thanks! I always have problems with these!
ac

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exam Other Question

SOLVE FOR THE INEQUALITY AND WRITE THE SOLUTION IN INTERVAL NOTATION

PROBLEM: 2x^2+8x-10>0
PLEASE HELP I'M VERY CONFUSED WITH THIS PROBLEM? WE HAVE TWO ANSWERS (?)"U"(?) BU It has infinity over top of the sigma Notation then on the side it has (�)^k-1 then underneath k=1 you want to find the sum?