exam Maths Puzzle Numerical Ability

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

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exam Other Question
Factor completely:
16x^2 + 24xy + 9y^2

I am trying to figure this out, but can not remember the steps in order to do so, could someone help me out please? Thank you 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