Omil
\frac{\left(2n-1\right)\left(4n^{2}+2n+1\right)}{8}
Baholash
n^{3}-\frac{1}{8}
Baham ko'rish
Klipbordga nusxa olish
\frac{8n^{3}-1}{8}
\frac{1}{8} omili.
\left(2n-1\right)\left(4n^{2}+2n+1\right)
Hisoblang: 8n^{3}-1. 8n^{3}-1 ni \left(2n\right)^{3}-1^{3} sifatida qaytadan yozish. Kublarning farqini ushbu formula bilan hisoblash mumkin: a^{3}-b^{3}=\left(a-b\right)\left(a^{2}+ab+b^{2}\right).
\frac{\left(2n-1\right)\left(4n^{2}+2n+1\right)}{8}
Toʻliq ajratilgan ifodani qaytadan yozing. Koʻphadli 4n^{2}+2n+1 faktorlanmagan, chunki unda ratsional ildizlar topilmadi.
Misollar
Ikkilik tenglama
{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
Arifmetik
699 * 533
Matritsa
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
Simli tenglama
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Differensatsiya
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Oʻngga
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Chegaralar
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