788. Представьте в виде многочлена.

a) (3 + 5x)^2 - 9 = 9 + 30x + 25x^2 - 9 = 30x + 25x^2 б) 25 - (4m - 5)^2 = 25 - (16m^2 - 40m + 25) = -16m^2 + 40m в) 9p^2 - (4 + 3p)^2 = 9p^2 - (16 + 24p + 9p^2) = -24p - 16 г) (-7k + 1)^2 + 14k = 49k^2 - 14k + 1 + 14k = 49k^2 + 1 д) 40c^2 - (1 - 6c)^2 + 1 = 40c^2 - (1 - 12c + 36c^2) + 1 = 40c^2 - 1 + 12c - 36c^2 + 1 = 4c^2 + 12c е) (8 + 7y)^2 - 49y^2 - 60 = 64 + 112y + 49y^2 - 49y^2 - 60 = 112y + 4