Odpowiedzi

2010-03-11T17:16:30+01:00
-a × 7 × b × (-5)
= 35ab
-2a × 3b × (-2)
= 12ab
1/4a × 4c × (-b)
= 1ac x ( - b ) = - 1abc
2010-03-11T17:18:43+01:00
-a*7*b*(-5)=35ab

-2a*3b*(-2)=12ab

1/4a*4c*(-b)=1ac *( - b ) = - 1abc
2010-03-11T17:22:44+01:00
7 x -5 x -a x b
-2x -2a x 3b
14a x -b x 4c