Question

(4а+в)²-(4а-в)² помогите упростить.

Answer 1

(4а+в)²-(4а-в)² = ((4a+b) - (4a-b))((4a+b) + (4a-b)) =

=(4a+b - 4a+b)(4a+b +4a-b) = 2b*8a

Answer 2

(4a+b)² - (4a-b)² = 16a²+8ab+b² - (16a² - 8ab+b²)=16a²+8ab+b² - 16a²+8ab-b²= 16ab