Question

Using the given zero, find all other zeros of f(x).

-2i is a zero of f(x) = x4 - 32x2 - 144

Answer 1

2i, 12, -12
2i, 6i, -6i

2i, 6, -6

2i, 12i, -12i

Answer 2

please help

Answer 3

u can factor it like this
\[\large f(x)=x^4-32x^2-144=(x^2-36)(x^2+4) \]

Answer 4

so when u put f(x)=0 u have
\[\large x^2-36=0\qquad\text{or}\qquad x^2+4=0\]
i am sure u can finish this