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91Ó°ÊÓ

Write out each sum in Exercises 34 in expanded form, and then calculate the value of the sum.

∑k=14(2+k)2+1

Short Answer

Expert verified

The expanded notation is10+17+26+37 and their sum is 90.

Step by step solution

01

Given information

The given summation is ∑k=14(2+k)2+1.

02

Write the summation in expanded form and evaluate the sum.  

Rewrite the given summation in expanded form.

∑k=14(2+k)2+1=(2+1)2+1+(2+2)2+1+(2+3)2+1+(2+4)2+1=32+1+42+1+52+1+62+1=10+17+26+37=90

03

Write the conclusion

The expanded form is 10+17+26+37.

The sum is90.

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