Question

find the degree of the polynomial (x2 -2 ) ( x2 +2)

Answer 1

= (x^2 - 2) ( x^2 +2)

= x^4 - 4

Hence degree is 4.

Hope it's helpful to u.

Answer 2

Answer:

(x²-2) (x²+2) = (x²)² - (2)²

= x^4 - 4

using identity

(a+b) (a-b) = a²-b²

so the degree of the polynomial is 4