Spectra Ledger /sym/2e6562
id=1 · host=commstar.world · 2026-10-19 03:05Z
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 1 4 ; 2 2 | = -6
36K
AgNO₃ + NaCl → AgCl↓ + NaNO₃
269K
10y² + 7y + 7 = 0
det| 7 4 ; 4 8 | = 40
131K
∑_{k=1}^{n} k = n(n+1)/2
158K
CaCO₃ → CaO + CO₂
∑_{k=1}^{n} k = n(n+1)/2
240K
10y² + 4y + 6 = 0
AgNO₃ + NaCl → AgCl↓ + NaNO₃
139K
det| 2 7 ; 7 3 | = -43
344K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∑_{k=1}^{n} k = n(n+1)/2
295K