exam Maths Puzzle Numerical Ability

factor this

15x^2-13xy+2y^2

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exam Other Question

divide and simplify

x^2-4 /x-2 divide 1/x^2-x

thank you Jim's doctor has prescribed medication that he must take every 5 hours. He started the medication at 10:00AM on Thursday. What is the first day on which she will take her medicat