Question

(x²-4) + (x²+4) +16​

Answer 1

Step-by-step explanation:

$({x}^{2} - 4) + ( {x}^{2} + 4) + 16 \\ {x}^{2} - 4 + {x}^{2} + 4 + 16 \\ {x}^{2} + {x}^{2} + 16 \\ 2 {x}^{2} + 16 \\ {x}^{2} = - \frac{16}{2} \\ {x}^{2} = - 8$