Spectra Ledger /sym/2e6562
id=1 · host=commstar.world · 2026-10-18 20:10Z
9y² + 1y + 4 = 0
∑_{k=1}^{n} k = n(n+1)/2
297K
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 9 4 ; 1 10 | = 86
138K
det| 2 6 ; 0 3 | = 6
138K
\frac{7}{8} \sum_{i=1}^{n} i^{2}
\frac{11}{8} \sum_{i=1}^{n} i^{2}
67K
AgNO₃ + NaCl → AgCl↓ + NaNO₃
∑_{k=1}^{n} k = n(n+1)/2
374K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
247K