A binary operation * on the set of rational numbers is defined as \(x \ast y = \frac{x^2 - y^2}{2xy}\). Find \(-5 \ast 3\)

Solve the inequalities for which \(\frac{x+4}{3}-\frac{x-3}{2} < 4\)

The cost of renovating a 6 m square room is N540. What is the cost of renovating a 9 m square room?

The sum of the first n positive integers is