Simplify: \(\frac{\log \sqrt{27}}{\log {81}}\)
Factorize the expression 2s\(^2\) - 3st - 2t\(^2\).
Solve the equation x\(^2\) - 2x - 3 = 0
Write as a single fraction: \(\frac{5}{6r} - \frac{3}{4r}\)
Factorize 2x\(^2\) - 21x + 45
