SOLUTION: I need so much help on subtracting square roots. The question is : find the differnece of square root of 288 and square root of 72. please help

Question 15697: I need so much help on subtracting square roots. The question is : find the differnece of square root of 288 and square root of 72. please help
Answer by gsmani_iyer(201) (Show Source): You can put this solution on YOUR website!

First of all make the above two square roots into surds as below:
=
=
Now we have find out the difference between the above 2. Since surds are
irrational numbers, they can be added or subtracted like real numbers. i.e.
-
=12 - 6
= (12-6)
= 6 . Answer
The same answer can be written as by bringing the square of 6
inside the root and multiplying it by 2. In the similar manner, you can do
the additions also.

I hope this is clear to you.

gsm

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