(3+5x)^2-9 = 9 + 30x + 25x^2 - 9 = 25x^2 + 30x
25-(4m-5) = 25 - 4m + 5 = -4m + 30
9p^2(4+3p)^2 = 9p^2(16 + 24p + 9p^2) = 144p^2 + 216p^3 + 81p^4
(-7k+1)^2+14k = 49k^2 - 14k + 1 + 14k = 49k^2 + 1
(3+5x)^2-9 = 9 + 30x + 25x^2 - 9 = 25x^2 + 30x
25-(4m-5) = 25 - 4m + 5 = -4m + 30
9p^2(4+3p)^2 = 9p^2(16 + 24p + 9p^2) = 144p^2 + 216p^3 + 81p^4
(-7k+1)^2+14k = 49k^2 - 14k + 1 + 14k = 49k^2 + 1