Question

How do I solve this?
Decide whether the given number is a zero of the polynomial
-2; f(x)=x^4+3x^2-28
yes or no

Answer 1

f(-2)=(-2)^4+3(-2)^2-28
can you solve this?

Answer 2

can you solve this? @brandonloves

Answer 3

just simplify it and if you got answer f(-2)=0 so answer is yes and if it is not the answer is no ok @brandonloves

Answer 4

ok, I should have realized that. usually "x = -2" is given, so I was thrown by that.
I got 0, so Yes. Thanks @mayankdevnani

Answer 5

welcome...