Question

(2-с)в крадрате-с(с+4)
помогите

Answer 1

$(2-c)^2-c(c+4)=4-4c+c^2-c^2-4c=4-8c$

Answer 2

(2 - c)² - c(c + 4) = 4 - 4c + c² - c² - 4c = 4 - 8c