exam Maths Puzzle Numerical Ability

multiply and simplify:

x^5y^3/x^2+13x+30 multiplication sign x^2+2x-3/x^7y^2

Thanks soooo much !

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exam Other Question

a school has a hall with 1000 lockers, all of which are closed.
one thousand students start down the hall. the first student opens every locker.
the second student closes all t The exact questions reads from the teachers worksheet (not in a book):
Put ay^2-2x-20y+94 into the following format x=a(y-k)^2 +h.

How do I set up the problem?

Thank you for