exam Maths Puzzle Numerical Ability

please help me with my homework. I've got a lot of load, and i am having a hard time with these 2. solve and show the solution so i can study it later. thanks.

** 2/(m+1)(m-2)

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exam Other Question

Please help. i cant figure this out.

What are similarities between radicals and rational exponent notation and what are two other examples of mathematical notation or wording de Someone invested $24,00 at 8% and the rest at 7.2%. How much did they invest at each same rate if their income from 8% is 2/3 that of 7.2%