Question

Expand the series and Evaluate:
Enter your answer as the example:
1+2+3+4+5=15
sum_(k=1)^5(k^3)

Answer 1

replace k by 1, then 2, then 3, then 4, then 5
put a plus sign between all the terms

Answer 2

in other words it is
\[\sum_{k=1}^5k^3=1^3+2^3+3^3+4^3+5^3\] then some arithmetic

Answer 3

1+8+27+64+125=225

Answer 4

that'll do it. you can also use
\[\sum_{k=1}^nk^3=\left(\frac{n(n+1)}{2}\right)^2\]