а) (2x - 5) (2x + 5) = 4x^2 - 25б) (3 - 4x)^2 = 9 - 24x + 16x^2в) (x + 4)^3 = x^3 + 12x^2 + 48x + 64г) (x - 6 + y)^2 = x^2 - 12x + 36 + 2xy - 12y + y^2д) (3x - 2) (9x^2 + 6x + 4) = 27x^3 + 18x^2 + 12x - 18x^2 - 12x - 8 = 27x^3 - 8
а) (2x - 5) (2x + 5) = 4x^2 - 25
б) (3 - 4x)^2 = 9 - 24x + 16x^2
в) (x + 4)^3 = x^3 + 12x^2 + 48x + 64
г) (x - 6 + y)^2 = x^2 - 12x + 36 + 2xy - 12y + y^2
д) (3x - 2) (9x^2 + 6x + 4) = 27x^3 + 18x^2 + 12x - 18x^2 - 12x - 8 = 27x^3 - 8