• Loser66
The pentagonal numbers p1, p2, p3,....pk are the integers that count the number of dots in k nested pentagon, as shown in the figure ( in comment) Show that p1 =1 and $$p_k =p_{k-1}+ (3k -2)$$ for $$k\geq 2$$. Conclude that $$\sum_{k=1}^n (3k -2)$$ and evaluate this sum to find a simple formula for $$p_n$$ Please help
Mathematics
• Stacey Warren - Expert brainly.com
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SOLVED
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