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# Rationalising the denominator watch

1. Question is: 3root50/5root27
I multiplied everything by root 27 but know it's wrong and unsure what to do so please help
2. (Original post by Lucofthewoods)
Question is: 3root50/5root27

I multiplied everything by root 27 but know it's wrong and unsure what to do so please help
Multiply both sides by .
3. (Original post by Lucofthewoods)
Question is: 3root50/5root27
I multiplied everything by root 27 but know it's wrong and unsure what to do so please help
Multiply top and bottom by root27 (what is root27 x root27?) and do some cancelling.

You'll then be able to simplify some more by breaking root50 into the root of a smaller number.
4. (Original post by Lucofthewoods)
Question is: 3root50/5root27
I multiplied everything by root 27 but know it's wrong and unsure what to do so please help
That's the correct approach, you're just most likely tripping up on calculations and simplifying. Note that:

...and then proceed to rationalise.

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