exam Maths Puzzle Numerical Ability

(4 cubert 9x+10)^3

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exam Other Question

Let the operation § be defined for all positive integers a and b by the equation
a § b = a + ab

For what value of b does 5 § b = 15?
Please explain the similarity between radicals and rational exponet notation.
please provide at least 2 examples of mathamatical notation or wording denoting the same process