(a(i))[4]
Find $s$ when $t = 26.5$, $u = 104.3$ and $a = -2.2$. State your answer in standard form, correct to 4 significant figures.
(a(ii))[3]
Rearrange the formula so that $a$ is expressed in terms of $u$, $t$ and $s$.
(b(i))[3]
Show that, on simplification, $x^2 + 2x - 63 = 0$.
(b(ii))[2]
Factorise $x^2 + 2x - 63$ into brackets.
(b(iii))[2]
Solve the equation $x^2 + 2x - 63 = 0$ to determine the difference between the perimeters of the two rectangles.