book Maths Puzzle Numerical Ability

I am trying to Simplify this:
3x^2(4x^2-2x+3)

Please help!!

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book Other Question

whats the sum of the reciprocals of the first three positive even intergers? The revenue of an Atlantic City bus company depends on the number of unsold seats. If 100 seats are sold, the price is $50. Each unsold seat increases the price per seat by $1. Let