Posted by **Barbara** on Friday, June 11, 2010 at 9:40pm.

please help me to calculate this. I have gotten everything else right but I am confused on calculation. r=6(1853)-(21)(516)I can do. It is the denominator that I am having a problem with. Square root[6(79)-(21)squared][6(44582)-(516)squared] I have worked with this for over to hours and I am exhausted. Please Help:

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**PsyDAG**, Saturday, June 12, 2010 at 10:25am
x^2 = x squared online

From your data:

r=6(1853)-(21)(516) = 11,118 - 10,836 = 282

√(474-441)(267492 -266256) = √(33)(1236)

I am uncertain as to how much is under the radical. If both, multiply and then find square root. If just one, find square root and then multiply.

I hope this helps.

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