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Rationalising and Simplifying Surds watch

1. In my fourth day of A levels I've hit a snag. I've had this explained to me step by step but I still don't understand it.

Rationalise and Simplify the following:
√12
------
√48

First step:
√12
------
2 √12

1
----
2

Firstly, how does √48 = 2 √12 and secondly, how is the answer 1/2 ?

This just extremely confused me. Please explain in layman's terms. Thank you.
2. (Original post by LilyRose1998)
In my fourth day of A levels I've hit a snag. I've had this explained to me step by step but I still don't understand it.

Rationalise and Simplify the following:
√12
------
√48

First step:
√12
------
2 √12

1
----
2

Firstly, how does √48 = 2 √12 and secondly, how is the answer 1/2 ?

This just extremely confused me. Please explain in layman's terms. Thank you.
What can you do to something of the form ?
3. (Original post by LilyRose1998)
In my fourth day of A levels I've hit a snag. I've had this explained to me step by step but I still don't understand it.

Rationalise and Simplify the following:
√12
------
√48

First step:
√12
------
2 √12

1
----
2

Firstly, how does √48 = 2 √12 and secondly, how is the answer 1/2 ?

This just extremely confused me. Please explain in layman's terms. Thank you.

The final step is a simple cancellation.

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