Question

Помогите пожалуйста
(m+3)(2m+4)
(3m+7)(4-3m)
(5-m)(-m-2)
(m-2)(m+3)
2m(m²-1)(m+2)
(3-m²)-(m-4)

Answer 1

Раскрываем скобки и производим действия:

(m + 3)(2m + 4) = 2m² + 4m + 6m + 12 = 2m² + 10m + 12 = 2(m² + 5m + 6)

(3m + 7)(4 - 3m) = 12m - 9m² + 28 - 21m = -9m²-9m + 28

(5 - m)(-m - 2) = -5m - 10 + m² + 2m = m² - 3m - 10

(m - 2)(m + 3) = m² + 3m - 2m - 6 = m² - m - 6

2m(m² - 1)(m+2) = 2m⁴ + 4m³ - 2m² - 4m

(3-m²) - (m-4) = 3 - m² - m + 4 = -m² - m + 7