Question

18. Evaluate:(x-2)(x+2)(x²+4) ​

Answer 1

Here is your answer

$\begin{gathered}(x - 2)(x + 2)(x {}^{2} + 4) \\ = (x {}^{2} + 2 {}^{2} )(x {}^{2} - 4) \\ = (x { }^{2} - 4)(x {}^{2} + 4) \\ = (x {}^{2} ) {}^{2} 4 {}^{2} \\ = x {}^{4} 16\end{gathered}$