exam Maths Puzzle Numerical Ability

Divide and simplify.

a^2/a^15

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exam Other Question

What are they asking me when they ask Re(2e^((i*pi)/3))? Same question for Im(some numbers). The Re() and Im() notation are new. It seems to me that I should drop all parts with please help me to solve this word problem: if x is the first of four consecutive even integers, write their sum as an algebraic expression in x.