exam Maths Puzzle Numerical Ability

i had to write in the simplest form without negative exponents my problem was (y^-1)^-2 and i got y^2 is that right??

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exam Other Question
Find the dot product v dot w if v = i + j and w = -i + j. _____x_____ =R(x)
(x-1)(x+2)

Analyzing the graph of a rational function using a 7 step method.