Evaluate I was able to evaluate it by using the calculator, ans is 4840. but how could i get a more mathematical approach by using the summation sign or something
Follow Math Help Forum on Facebook and Google+
So basically, we're factoring out the common 4, then writing is as the sum of the first n (15) squares, minus ... 4(1 + 4 + 9 + 16) = 120.
View Tag Cloud