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Maths Puzzle
Numerical Ability
Simplify. Write each expression as a power and as a radical
X*X/
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book Other Question
It takes a freight train 2 hrs longer to travel 300 miles than it takes an express train to travel 280 miles. The rate of the express train is 20 miles per hour greater than the rate of the freight train. Find the times and rates of both trains.
(1) Find the x- intercepts of the graph of f(x) =2x^2-4x-4