I'm helping my girlfriend with her homework, which is square root problems. I have a question on the format in which you write the answers. For example this problem: Are the 5 and 4 in the right places or do they need to be switched? Also is the x^2 supposed to be written like that? She said yes but I don't remember. Also if the variable is higher than 2 is it still written that way? She says this is correct but I'm really not sure: I just havent done this stuff in pretty much forever. Thanks to anyone who can help.
Ok If I remember correctly what you have written there means 5 multiplied by the square root of 4. The one with the X doesn't make sense because I think its the square root of X squared, which would be X. Now here's where I'm really guessing, I think if the variable is higher then 2, its written in that little "V" portion of the sign. Hope this helps and I'm remembering correctly. Try googling it!
Another way to think of it is that the square root function is the same as raising the value to the power of 1/2. So, sqrt(10x) = (10x)^(1/2) Then you can do the multiplication simpler IMO.
