а) (5a-b)^2 = 25a^2 - 10ab + b^2
б) (y+6)^2 = y^2 + 12y + 36
в) (5a-2)(5a+2) = 25a^2 - 4
г) (x-0.6)(0.6+x) = x^2 - 0.36
а) (5a-b)^2 = 25a^2 - 10ab + b^2
б) (y+6)^2 = y^2 + 12y + 36
в) (5a-2)(5a+2) = 25a^2 - 4
г) (x-0.6)(0.6+x) = x^2 - 0.36