Question

F (x)=2 x al cuadrado menos 8

Answer 1

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