Reduce the expression by rationalising it — task. Maths CBSE Homework Assignments, Class 9.

(\sqrt{47} + \sqrt{7}) (\sqrt{47} - \sqrt{7})

$=$

{(\sqrt{47} - \sqrt{7})}^{2}

$=$

i

$2$

\sqrt{i}

\frac{5}{13 + \sqrt{7}}

Did you find an error?

4. Reduce the expression by rationalising it