(a)[2]
Rationalise the denominator in $\frac{9}{\sqrt{3}}$. Write your answer in the simplest form.
(b)[2]
$(5 - \sqrt{2})(1 + 3\sqrt{2}) = c + k\sqrt{2}$. Determine the value of $c$ and the value of $k$.
Mathematics 0580 · IGCSE · Surds
Mathematics 0580 · IGCSE · Surds
Rationalise the denominator in $\frac{9}{\sqrt{3}}$. Write your answer in the simplest form.
$(5 - \sqrt{2})(1 + 3\sqrt{2}) = c + k\sqrt{2}$. Determine the value of $c$ and the value of $k$.