a) 12m^2 n^5/ 4mn^5 +21mn/6m^4 n^2 *2m^5 n-1/2m b) 3u^3 v-3vu*5u^2+(3u^2 v*2u-vu^3)/ 4uv   to jest zadanie z Matematyka z plusem 2 zad. 7 str. 90   Pliss szybko!   daję 45 punktów!!!! :D

[latex]12m^2 n^5/ 4mn^5 +21mn/6m^4 n^2 *2m^5 n-1/2m= 3m+21/6m^{3}n * 2 m^{5}n - 1/2m= 3m+7m^{2}-1/2m= 2,5m + 7m^{2}[/latex] 3u^3 v-3vu*5u^2+(3u^2 v*2u-vu^3)/ 4uv[latex]3u^3 v-3vu*5u^2+(3u^2 v*2u-vu^3)/ 4uv= 3 u^3v-15u^3v+(6u^3v-u^3v):4uv=-12u^3v+5u^3v/4uv=-12u^3v+5/4u^2[/latex]

jest  super