前 次 新10 1- 板

---

272:（　´∀｀）さん / :
n^2(u+p)+u^2(p+n)+p^2(n+u)+2nup
=(u+p)n^2+(u^2+2up+p^2)*n+u^2p+up^2
=(u+p)n^2+(p+n)^2*l*1/l+up(u+p)
=(u+p){n^2+(u+p)*n+up}
=(u+p)(n+u)(n+p)
=(n+u)(u+p)(n+p)

---

前 次

---

ir ver 1.0 beta2.2 (03/10/22)