Simplify the following:
$\frac{c}{3}\times\frac{d}{2}$c3×d2.
$\frac{b}{q}\times\frac{k}{u}$bq×ku
$\frac{1}{a}\times\frac{1}{b}$1a×1b
Complete the equation:
simplifies algebraic fractions, and expands and factorises quadratic expressions