book Maths Puzzle Numerical Ability

Perform the indicated operation involving rational expressions:

(2x+6/7y)(x^2+5/x^2+6x+9)

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book Other Question

The Cape Cod Canal is eleven miles long. A passenger boat goes from here to Boston, via the canal and ocean, in 15 1/3 hrs., while a freighter makes the same trip in 30 hrs. On the "Find the 5th term of the binomial expansion."
(2m+n)^10

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