SOLUTION: I need some help understanding how to do these problems. Simplify: 2 square root of 12+ 4 square root of 27 and simplify: square root of 20 over 5

SOLUTION: I need some help understanding how to do these problems. Simplify: 2 square root of 12+ 4 square root of 27 and simplify: square root of 20 over 5 - 1 over square root of 5

Question 91333: I need some help understanding how to do these problems.
Simplify: 2 square root of 12+ 4 square root of 27
and simplify: square root of 20 over 5 - 1 over square root of 5
thanks a million
Answer by tutor_paul(519) (Show Source): You can put this solution on YOUR website!

Another way to write this is as follows:

Now, apply this property:

This gives you:

Simplifying:

Now that each term is the square root of the same thing, they can be combined:

================================================

Rationalize the denominator of the second term:

Now perform the subtraction and you are done:

Good Luck,
tutor_paul@yahoo.com
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