Spectra Ledger /sym/2e6562
id=1 · host=commstar.world · 2026-10-19 03:26Z
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
det| 4 6 ; 0 5 | = 20
269K
10y² + 7y + 7 = 0
det| 12 9 ; 5 13 | = 111
158K
CaCO₃ → CaO + CO₂
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
240K
10y² + 4y + 6 = 0
det| 7 4 ; 4 8 | = 40
139K
\frac{2}{2} \sum_{i=1}^{n} i^{2}
344K
\binom{n}{k} = \frac{n!}{k!(n-k)!}
∑_{k=1}^{n} k = n(n+1)/2
201K