Question

for the function
f(x)= xcubed-3xsquared+25x-75

a)find all the zeros of the function
b) write the polynomial as a product of linear factors

Answer 1

\[x^3-3x^2+25x-75=(x-3) \left(x^2+25\right)=(x-3)( x\pm 5 i)\]

Answer 2

thats the answer?

Answer 3

1. x = 3, 5i, -5i
2. (x-3)(x-5i)(x+5i)

Answer 4

thanks