Question

3. What is the rationalising factor of 2 ^ 3 root 5. Please explain in brief .....

Answer 1

Step-by-step explanation:

$rationalizing \: factor \: of \: {2}^{3} \sqrt{5} \: is \: \\ \sqrt{5} \: because \: \\ {2}^{3} \sqrt{5} \times \sqrt{5} = {2}^{3} \times 5 \\ = 8 \times 5 = 40 \\ (square \: root \: is \: removed)$