(a)[2]
$(3-\sqrt5)(2+3\sqrt5)=a+b\sqrt5$. Find $a$ and $b$.
(b)[2]
Rationalise the denominator and express your answer in its simplest form. $\frac{6}{\sqrt2}$.
Mathematics 0580 · IGCSE · Powers and roots
Mathematics 0580 · IGCSE · Powers and roots
$(3-\sqrt5)(2+3\sqrt5)=a+b\sqrt5$. Find $a$ and $b$.
Rationalise the denominator and express your answer in its simplest form. $\frac{6}{\sqrt2}$.