Posted by jj86 on Wednesday, February 4, 2009 at 3:29pm.
A couple of extra practice questions I can't remember how to do. Can anyone help?
1. "2*squareroot*5(3*squareroot*7 + 8*squareroot*12)"
I simplified down to 6*squareroot*35 + 2*squareroot*15, but now I am stuck!
2. "The sum of a number and the square of that number is 30. What is the number?"
Is the number 900?
Thanks for any help!

math 11 review  Mr. L., Wednesday, February 4, 2009 at 4:39pm
Ok
for number one i can't follow your logic, but you have to solve the problem in the brackets before using outside information.
For number 2... The equation would be written like this
n + n squared = 30
therefore what numbers can you square that are below 30?
Work backwards
put in values for n
1,2,3 etc. until you can add the same number and then get thirty
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