Question

K(x) = x^2(x^2 + 16), where K(x) = x^2.

I got K(x^2) = x^8 + 16x^4. Is this right? Thanks :))

Answer 1

Whoops, I meant we had to find the value of the function K(x^2), not where K(x)=x^2. Sorry about that lol

Answer 2

If K(x) = x^2(x^2 + 16) then
K(x^2) = x^4(x^4 + 16)
= x^8 + 16x^4

you are right.

but...
your first line is confusing.
either K(x) = x^2(x^2 + 16) or K(x) = x^2

Answer 3

ok, saw your correction