The series is Pk:13+33+53+...+(2k−1)3=k2(2k2−1) and I have to replace
Pk with Pk+1 to prove the series.
I have to show that k2(2k2−1)+(2k−1)3=(k+1)2[2(k+1)2−1]
I'm sorry that I'm asking but their are just so many factors the algebra just passes over my
head. Any help is appreciated.
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