Пошаговое объяснение:
1) 8•(a-b+c) = 8a - 8b + 8c
2) -5 • (m-n+k) = -5m + 5n - 5k
3) a • (b - m + n) = ab - am + an
4) -a • (6b - 3c + 4) = -6ab + 3 ac - 4a
5) (3m - 2k + 1) • (-3) = -9m + 6k - 3
6) -2a (b + 2c - 3m) = -2ab - 4 ac + 6 am
7) (-2a + 3b +5c) • 4m = - 8 am + 12 bm + 20 cm
8) -ab • (9m + k - n) = -9 abm - abk - abn
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Пошаговое объяснение:
1) 8•(a-b+c) = 8a - 8b + 8c
2) -5 • (m-n+k) = -5m + 5n - 5k
3) a • (b - m + n) = ab - am + an
4) -a • (6b - 3c + 4) = -6ab + 3 ac - 4a
5) (3m - 2k + 1) • (-3) = -9m + 6k - 3
6) -2a (b + 2c - 3m) = -2ab - 4 ac + 6 am
7) (-2a + 3b +5c) • 4m = - 8 am + 12 bm + 20 cm
8) -ab • (9m + k - n) = -9 abm - abk - abn