2. Разложите на множители: 1) 16-c²; 2) p² + 2p + 1; 3) 9m² - 25; 4) 36m² + 24mn + 4n².

1) $$16 - c^2 = 4^2 - c^2 = (4-c)(4+c)$$ 2) $$p^2 + 2p + 1 = (p+1)^2$$ 3) $$9m^2 - 25 = (3m)^2 - 5^2 = (3m-5)(3m+5)$$ 4) $$36m^2 + 24mn + 4n^2 = (6m)^2 + 2*6m*2n + (2n)^2 = (6m+2n)^2$$ **Ответ:** 1) $$(4-c)(4+c)$$ 2) $$(p+1)^2$$ 3) $$(3m-5)(3m+5)$$ 4) $$(6m+2n)^2$$