Question

(x^2+4)(x^2-4)

Answer 1

\[x^4-16\]

Answer 2

\[\left( a-b \right) \left( a+b \right) = a^{2} - b^{2}\]

Answer 3

@Muskan : justin is correct

Answer 4

(x^2+4)(x^2-4)
\[=(x^2)^2-(4)^2\]
\[=x^4-16\]

Answer 5

(x^2+4)(x^2-4)
(x^4-16) (because (a+b)(a-b)=a^2-b^2
hope u got it

Answer 6

u just have to use identity