Spectra Ledger /sym/2e6562
id=1 · host=commstar.world · 2026-10-18 20:25Z
9y² + 1y + 4 = 0
det| 8 6 ; 6 9 | = 36
40K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 4 7 ; 2 5 | = 6
138K
\frac{7}{8} \sum_{i=1}^{n} i^{2}
\binom{n}{k} = \frac{n!}{k!(n-k)!}
176K
det| 7 4 ; 4 8 | = 40
67K
AgNO₃ + NaCl → AgCl↓ + NaNO₃
\binom{n}{k} = \frac{n!}{k!(n-k)!}
374K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
247K
∑_{k=1}^{n} k = n(n+1)/2
417K