Przeszkształć iloczyny na sumy
3 (2x + y) =
5x (y + 2) =
3ab (c - 2) =
10z (xy - 3) =
2x (x - 5) =
-3 (x2 - 2x) =
(x - 2) x =
-3a (a + 2b + 4c) =
-4b (a – 2b +c)=
4c (a – bc2 - 2c) =
cx (x2 + 2x + 1) =
( -4x3 + 8x2 - 6) : 2 =