SOLUTION: Use the properties of summation to evaluate the following: 4 Σ (i^2-3i) i=1 Thanks

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Question 987061: Use the properties of summation to evaluate the following:
4
Σ (i^2-3i)
i=1
Thanks
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
You will sum when i is 1,2,3,4 and add them all together.
i=1; 1-3= -2
i=2; 4-6= -2
i=3; 9-9= 0
i=4; 16-12=4
Answer is -2-2+0+4=0
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