а) (2a-b)^2 (2a+b)^2 = (4a^2-4ab+b^2) (4a^2+4ab+b^2)= 16a^4 + 16a^2b^2 + 2b^4 - 16a^2b - 16ab^2 - 2b^3
б) (x-6x^3)^2 = (x^2 -12x^4 + 36x^6)
в) (y+b)^2 (y-b)^2 = (y^2 + 2by + b^2) (y^2 - 2by + b^2)= y^4 - b^4
а) (2a-b)^2 (2a+b)^2 = (4a^2-4ab+b^2) (4a^2+4ab+b^2)
= 16a^4 + 16a^2b^2 + 2b^4 - 16a^2b - 16ab^2 - 2b^3
б) (x-6x^3)^2 = (x^2 -12x^4 + 36x^6)
в) (y+b)^2 (y-b)^2 = (y^2 + 2by + b^2) (y^2 - 2by + b^2)
= y^4 - b^4