Arithmetic.

Mar 2008
40
1
Okay, so I have got as far as this below.

31[11256]-[1590]^2/31(31-1) and I know the answer should be 8.8 but not sure of the steps to the end. I believe I should simplify and cancel out the 31 on top and botton and it should look like:

[11256]-[1590]^2/30

but I don't see how you get to 8.8 any help would be appreciated.

Thanks,
 
Dec 2007
3,184
558
Ottawa, Canada
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