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surds

Chelsea12345

How do you get 5√33 when you simplify √15 x √55???

Reply 1

RDKGames

Study Forum Helper

Original post by Chelsea12345

How do you get 5√33 when you simplify √15 x √55???

Use your surd rules then proceed to simplify inside the root. You should be looking to factor out a square number which square roots nicely.

Otherwise, break down the roots into roots of primes then simplify at the end.

(edited 7 years ago)

Reply 2

fatima1998

Original post by Chelsea12345

How do you get 5√33 when you simplify √15 x √55???

you first simplify the
√15 x √55
soo what 15 goes in to? 5 * 3
do the same with 55
then you should end up with two 5s and something
the 5 goes outside and the number you get will go inside
try it :yy:

Reply 3

pelaitsc45

√15 x √55 = √825

√825 = √33 x 25

√25 = 5

You put that outside the sqrt symbol since it has been squared: 5√33

Since 33 cannot be factored and squared any more, this is the simplest form.