The table shows the distribution of goals scored by 25 teams in a football competition. Calculate the probability that a team selected at random scored at most 3 goals.
The total surface area of a hemispher is 75\(\pi cm^2\). Find the radius.
Find the value of x for which \(\frac{x - 5}{x(x - 1)}\) is undefined.
Solved the equation \(2x^2 - x - 6\) = 0
Factorise completely the expression
\((x + 2)^2\) - \((2x + 1)^2\)
