exam Maths Puzzle Numerical Ability

Find for consecutive integers such that the sum of the second and the fourth is 17 less than thrice the first.

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exam Other Question

-59+(-13) hello i am having trouble trying to solve radicals with letters in them.(i know there is mathmatical word for letters i just forgot) here is one of the questions.
the square root of 360x^5y^4
thank you