Spectra Ledger /sym/2e6562
id=1 · host=commstar.world · 2026-10-19 03:14Z
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
10y² + 7y + 7 = 0
\binom{n}{k} = \frac{n!}{k!(n-k)!}
131K
\frac{11}{6} \sum_{i=1}^{n} i^{2}
158K
CaCO₃ → CaO + CO₂
det| 12 1 ; 5 13 | = 151
240K
\oint_C \vec{F}\cdot d\vec{r} = 0
376K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
139K
∑_{k=1}^{n} k = n(n+1)/2
91K
det| 7 4 ; 4 8 | = 40
201K