exam Maths Puzzle Numerical Ability

Simplify: no negative exponents or decimal answers
x^-2-y^-2/x^-1-y^-1

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exam Other Question

what is the awnser to this problem(4a+5b)squared A hockey team determines that it needs at least 60 points for the season in order to make the playoffs. A win w is worth 2 points and a tie t is worth 1 point. Find and graph an inequality that describes the situation.