exam Maths Puzzle Numerical Ability

Solve, expressing answer in exact form.
log<3>9 = x^3 - ln(e^-s)

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exam Other Question

Factor completely.
49x^2 - 9 a hard working student has 90 percent chance to pass the examination and that pass percentage of the university is 28 percent. Suppose 20% students worked hard. What is the probabi