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use the summation formulas to rewrite the expression without the summation notation. Use the result to find the sum for n=100.

∑     4i+3/n2

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Kenneth S. | Expert Help in Algebra/Trig/(Pre)calculus to Guarantee Success in 2018Expert Help in Algebra/Trig/(Pre)calculu...
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Summation of n terms (from i=1 to n) of the expression 4i+3 = 4[n(n+1)/2] + can simplify.
What is the n squared doing there?  If it's intended to be a denominator, it can be factored out since it's not changing, only i changes during the summation.