Question

Using factor theorm show that (x+2) is a factor of x^4 - x^2 - 12​

Answer 1

Answer:

Step-by-step explanation:

f(x)=x^4-x^2-12

if x+2 is a factor of f(x) then f(-2)=0

Here F(-2)=(-2)^4 - (-2)^2-12

=16-4-12=0

Hence x+2 is a factor of f(x)=x^4-x^2-12