Subtract then simplify by collecting like radical terms if possible 4 √27-3√3

Question

Subtract then simplify by collecting like radical terms   if possible 4 √27-3√3

saifoo.khan · Answer

$$\frac{4}{\sqrt{27} - 3 \sqrt 3}$$

saifoo.khan · Answer

This is the question right?

anonymous · Answer

It wants it to be solved then simplify it into radical terms if possible

saifoo.khan · Answer

This is not possible.

anonymous · Answer

can u please help me solve mi problum

saifoo.khan · Answer

This is not possible.

anonymous · Answer

yeah what is it?

anonymous · Answer

to saifoo.khan

anonymous · Answer

I think he means 4 (√9 x√3) - 3 √3 = 
4 (3√3) - 3√3 = 
12 √3 - 3√3 = 9√3

anonymous · Answer

what is the like radical term for?

anonymous · Answer

This is what is confusing me

anonymous · Answer

It's that you can't add or subtract unline radicals like √27 and √3, so you have to make them alike. You break up √27 into √9 x √3. √9 simplifies to 3 and now you have like radicals in the form of √3 for both and they  can now be subtracted.

anonymous · Answer

Thank you so much that is a big help.

anonymous · Answer

4 √27   -    3√3
= 4 √ 3^2 * 3  - 3 √3
= 4 * 3 √3       - 3√3
=     12√3        -3 √3
=     9√3