Thread: division of radicals.........

Hi! I'm a canadian student in america.

Please help me on division of radicals =)

1.) 6√18 ÷ 12√40

2.) 8√19 ÷ 4√38

3.) 20√3 ÷ 5√ 3

4.) 42√ 6 ÷ 3√6

5.) -4√20 ÷ √2

6.) 1 / 2+√5

7.) 1 / 3-√11

8.) 3 / √3-1

9.) 5 / 2-√3

10.) 2 / 4-√14

thanks!

Originally Posted by quebec567

Hi! I'm a canadian student in america.

Please help me on division of radicals =)

1.) 6√18 ÷ 12√40

2.) 8√19 ÷ 4√38

1.) 6*sqrt(9)*sqrt(2)/[2*sqrt(10)]

18*sqrt(2)/[2*sqrt(10)]

(9*sqrt(2))/(sqrt(10))

(9*sqrt(5))/5

2.) (8*sqrt(19))/((4*sqrt(38))

(2*sqrt(2))/2

sqrt(2)

Originally Posted by quebec567

3.) 20√3 ÷ 5√ 3

4.) 42√ 6 ÷ 3√6

(20*sqrt(3))/(5*sqrt(3))

(4*sqrt(3))/(sqrt(3))

= 4

4.) (42*sqrt(6))/(3*sqrt(6))

(14*sqrt(6))/(sqrt(6))

= 14

And with that said, I have to get ready for work and such- I'll answer some of the other unanswered ones later.

Originally Posted by quebec567

Hi! I'm a canadian student in america.

Please help me on division of radicals =)

1.) 6√18 ÷ 12√40
2.) 8√19 ÷ 4√38
3.) 20√3 ÷ 5√ 3
4.) 42√ 6 ÷ 3√6
5.) -4√20 ÷ √2
6.) 1 / 2+√5
7.) 1 / 3-√11
8.) 3 / √3-1
9.) 5 / 2-√3
10.) 2 / 4-√14
thanks!

Hello,





From #6 on I presume, that the denominators are sums(?):











EB

Originally Posted by earboth

Hello,

Don't you mean:

Originally Posted by AlvinCY

Don't you mean:

Hi,

of course I meant that - thanks for correcting.

EB