Question

How do you Multiply Radicals?????​

Answer 1

1.
`4√(5)`

2.
`10√(10)`

Explanation:

When you multiply radicals, you do the following

`a√(b)\cdot c√(d)\\\\=ac√(bd)`

with that in mind

1.

`√(16)\cdot √(5)`

here we don't need to multiply 16 times 5, because 16 = 4^2 and take the square root of it, gives you 4

`=4√(5)`

2.

`√(20)\cdot 5√(2)\\\\\longrightarrow 20 = 2^2\cdot 5\\\\=2√(5)\cdot5√(2)\\\\=(2\cdot5)√(5\cdot2)\\\\=10√(10)`