Question

f(x)=(x^2-1)×(x^2+1) пройзвод

Answer 1

$\frac{d}{dx} [(x^2-1)(x^2+1)]$
$(x^2-1) \frac{d}{dx}[x^2+1]+(x^2+1) \frac{d}{dx} [x^2-1]$
$2(x^2-1)x+2(x^2+1)x$
$4x^3$