Question

( x + 3 ) ( x - 3 ) ( x + 4 ) ( x - 4 )​

Answer 1

Answer:

$x ^{2} - 3^{2} \times x {}^{2} - 4 {}^{2}$

$x {}^{2} - 9 - x {}^{2} - 16$

$- 9 - 16$

$- 25$

Answer 2

Step-by-step explanation:

{(x+3)(x-3)}{(x+4)(x-4)}

(x^2-3^2)(x^2-4^2)

(x^2-9)(x^2-16)

x^4-25x^2+144