How do you find the zeros of g(x)=x45x236?

1 Answer
Nov 1, 2016

g(x)=x45x236 has 4 zeros, x=3,3,2iand2i

Explanation:

Given:

g(x)=x45x236

Let u=x2

g(u)=u25u36=0

0=u25u36

0=(u9)(u+4)

u=9andu=4

x=±3andx=±2i

g(x)=x45x236 has 4 zeros, x=3,3,2iand2i