(a)[2]
Expand then simplify $(2p^2 - 3)(3p^2 - 2)$.
(b(i))[2]
Calculate the value of $s$ when $u = 20$, $v = 30$ and $t = 7$.
(b(ii))[3]
Rearrange the formula so that $v$ is expressed in terms of $s$, $u$ and $t$.
(c(i))[2]
Factorise completely the expression $2qt - 3t - 6 + 4q$.
(c(ii))[3]
Factorise completely $x^3 - 25x$.