(a(i))[1]
Work out $x$ from $3^x = 243$.
(a(ii))[1]
Work out $x$ from $16^x = 4$.
(a(iii))[2]
Work out $x$ from $8^x = 32$.
(a(iv))[2]
Work out $x$ from $27^x = \frac{1}{9}$.
(b)[3]
Solve $y^2 - 7y - 30 = 0$ by factorisation. Show your working.
Mathematics 0580 · IGCSE · Indices II