10 points best answer math question?

Question

(x+(2+x^2)(x-(2+x^2)
How do I simplify it help please

Answer 1

The expression [x + (2 + x ²)][x - (2 + x ²)]

Sum and  difference of same terms (a + b )(a - b ) = a ²- b ²

In this case a = x , b = (2 + x ² )

= x ²  - (2 + x ² )²

= x ²  - (4 + x ⁴ + 4x ²)

= x ²- 4 - x ⁴ - 4x ²

= - x ⁴ - 3x ² -4

(x + (2 + x ²))(x - (2 + x ² )) = - x ⁴ - 3x ² - 4.