3b(a-b)=3ba-3b^2
-5(0.8c-0.9d)=-4c+4.5d
7m(m-n-p)=7m^2-7mn-7mp
-0.3c(-5a-3c-2d)=1.5ca+0.9c^2+0.6cd
1)3b(a-b)=3ba-
2)-5(0.8c-0.9d)=-4c+4.5d
3)7m(m-n-p)=-7mn-7mp
4)-0.3c(-5a-3c-2d)=1.5ca+0.9+0.6cd
3b(a-b)=3ba-3b^2
-5(0.8c-0.9d)=-4c+4.5d
7m(m-n-p)=7m^2-7mn-7mp
-0.3c(-5a-3c-2d)=1.5ca+0.9c^2+0.6cd
1)3b(a-b)=3ba-![3b^{2}](/tpl/images/0122/1283/1b6ef.png)
2)-5(0.8c-0.9d)=-4c+4.5d
3)7m(m-n-p)=
-7mn-7mp
4)-0.3c(-5a-3c-2d)=1.5ca+0.9
+0.6cd