Question

multiply irrational number?

Answer 1

I think it is correct

Answer 2

Here's your answer.

6√15 by 4√3
$= 6 \sqrt{15} \times 4 \sqrt{3}$
$= (6 \times 4)( \sqrt{15} \times \sqrt{3} )$
$= 24 \times \sqrt{45}$
$= 24 \times \sqrt{3 \times 3 \times 5}$
$= 24 \times 3 \times \sqrt{5}$
$= 72 \sqrt{5}$
$\boxed{\red{Hence, \: your \: answer \: is \: 72 \sqrt{5}}}}$.