ooo..i just did this in Algerbra II, i took Geometry last year and did them also...i was very confused at first, but how your friend wrote out all the square roots can be very helpful if you know why he wrote them. When simplifying a radical you want to find square root factors. Say you have RADICAL 18. 9, a perfect square, can be multiplied by 2 to equal 18. So your problem would be:
EXAMPLE:
RADICAL 18
=RADICAL 9 X RADICAL 2
=square root of 9=3
ANSWER- 3 RADICAL 2
always look for a perfect square multiplied by another number to equal the RADICAL number. That sthe easiest way for me to do it.
This would be so much easier to explain in person, or at least with a radical button on the computer. Well, i tryed, hope it helps.
look for the factors that are square roots, 1,4,9,16,25,36,49,64,81,100,121........