exam Maths Puzzle Numerical Ability

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2x+3y-x-2y

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exam Other Question

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Find the zeros of the following functions.

f(x) = 4x^3-4x^2-7x-2
A plane flies 300 miles with a tail wind in 1 hour. It takes the same plane 2 hours to fly the 300 miles when flying against the wind. What is the plane's speed in still air?