Question

Спрости вираз: 1)Зm(2m-3n) -2n(n+4m) 2)За(2b + 2а)+3а (2b - 5а)

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Answer 1

Ответ:

$1) {6m}^{2} - 9mn - {2n}^{2} - 8mn = \\ 6 {m}^{2} - 2 {n}^{2} - 17mn$

$2)6ab + 6 {a}^{2} + 6ab - 15 {a}^{2} = \\ 12ab - 9 {a}^{2}$

Answer 2

1. 6m\2 (во втором степене) -3\2mn-2n\2-8nm
2. 6ab+6a\2+6ab-15a\2