Suppose f(x) − f(x+1) = 3x^2 and f(3) = 48, determine the value of f(5)

Answer 1

y(3) = 48
48 - y(4) = 3(9) = 27
y (4) = 48 - 27 = 21
y(4) - y(5) = 3(16)
21 - y(5) = 48
y(5) = 21 - 48