Symbolic Index /sym/ea4bfa
id=1 · host=au.commstar.world · 2026-10-19 15:58Z
\frac{7}{8} \sum_{i=1}^{n} i^{2}
CaCO₃ → CaO + CO₂
\binom{n}{k} = \frac{n!}{k!(n-k)!}
57K
\frac{3}{5} \sum_{i=1}^{n} i^{2}
∑_{k=1}^{n} k = n(n+1)/2
264K
Fe₂O₃ + 3CO → 2Fe + 3CO₂
\binom{n}{k} = \frac{n!}{k!(n-k)!}
250K
∑_{k=1}^{n} k = n(n+1)/2
∇²θ = 0
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
46K
∑_{k=1}^{n} k = n(n+1)/2