a_n uchun yechish
a_{n}=\left(n+1\right)^{2}
n uchun yechish (complex solution)
n=-\left(\sqrt{a_{n}}+1\right)
n=\sqrt{a_{n}}-1
n uchun yechish
n=-\left(\sqrt{a_{n}}+1\right)
n=\sqrt{a_{n}}-1\text{, }a_{n}\geq 0
Baham ko'rish
Klipbordga nusxa olish
a_{n}=n^{2}+2n+1
\left(a+b\right)^{2}=a^{2}+2ab+b^{2} binom teoremasini \left(n+1\right)^{2} kengaytirilishi uchun ishlating.
Misollar
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