Question

State whether the expression x^4 + x^-4is polynomial or not . Justify

Answer 1

Answer:

x−2)(x−4)

=

x

x

2

−6x+8

=x−6+

x

8

=x−6+8x

−1

Here, the exponent of variable x in the third term, i.e., in 8x

−1

, is −1, which is not a whole number. So, this algebraic expression is not a polynomial.

Answer 2

Answer:

Step-by-step explanation:

Answer:

YES

Step-by-step explanation:

(-4)^2+2(-4)-8

16-8-8

16-16

0