despratly in need of help with surds!!!?

if anyone knows the mothod of finding the answer to this question i would really apreciate it

—

3-/7

its rationalising the denominator

i was doing well up to now

much apriciated

best comment for som1 that tells me the method too!!!

cheers!

Top 2 Answers

A few days ago

Anonymous

Favorite Answer

The answer is -1.

The denominator has to be fixed, 3-7 is negative 4. 4 divided by negative 4 is negative one.

A few days ago

chasrmck

You can help me too. What is surds? Is this fraction meant to be 4/(3â7)? If so then multiply numerator and denominator by the radical.

4â7/(3â7â7)=4â7/21

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