SOLUTION: I am doing something wrong. I am missing a step. I know this is probably easy but those are the harder ones for me. I can get some help? Add or subtract as indicated:

Question 49906: I am doing something wrong. I am missing a step. I know this is probably easy but those are the harder ones for me. I can get some help?
Add or subtract as indicated:
a. 4√72 - 2√48

b. √75 - √48

Found 2 solutions by Nate, rapaljer:
Answer by Nate(3500) (Show Source): You can put this solution on YOUR website!
a.)

Only when you take the square root of the same numbers, you subtract or add them.
b.)

Answer by rapaljer(4671) (Show Source): You can put this solution on YOUR website!
a. 4√72 - 2√48

b. √75 - √48

For more detailed explanations see my Lesson Plan "Adding and Subtracting Square Roots" in Square-cubic-other-roots in Algebra.com. Also, please see my website by clicking on my tutor name.

R^2 at SCC

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