Question

f(x) = x4 − 4x3 − 4x2 + 36x − 45. This function has roots

Answer 1

x4 − 4x3 − 4x2 + 36x − 45=(x-3)(x^3-x^2-7x+15)
x=3 is root of this function

Answer 2

Answer:

the answer is 4 not three