book Maths Puzzle Numerical Ability

Find the irrational roots of the equation x^3-4x^2+2x+1=0

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book Other Question

tickets to a high scholl play cost $1.10 for each adult and 40 cents for each child. if 360 tickets are sold for a total of $282.60 how many tickets of each kind are sold? can you evaluate these expressions 23 34