Spectra Ledger /sym/2e6562
id=1 · host=commstar.world · 2026-10-18 22:42Z
det| 5 7 ; 7 6 | = -19
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
40K
det| 8 2 ; 7 9 | = 58
297K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
\binom{n}{k} = \frac{n!}{k!(n-k)!}
138K
\frac{8}{6} \sum_{i=1}^{n} i^{2}
138K
6n² + 8n + 4 = 0
∑_{k=1}^{n} k = n(n+1)/2
67K
∇²φ = 0
det| 7 7 ; 4 8 | = 28
306K
det| 7 4 ; 4 8 | = 40
322K
∑_{k=1}^{n} k = n(n+1)/2
\frac{11}{6} \sum_{i=1}^{n} i^{2}
374K
\frac{12}{6} \sum_{i=1}^{n} i^{2}
112K
5y² + 8y + 1 = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
247K
ΔS ≥ 0
AgNO₃ + NaCl → AgCl↓ + NaNO₃