Tolong di bantu ya​ plisss

integral

∫x^n dx = 1/(n + 1) x^(n + 1) + C

y' = dy/dx → dx = dy/y'

(x⁴ – 1)/(x³ + x)

= (x² – 1)(x² + 1) / x(x² + 1)

= (x² – 1)/x

= x – 1/x

∫((x⁴ – 1)/(x³ + x))² dx

= ∫(x – 1/x)² dx

= ∫(x² + 1/x² – 2) dx

= ∫(x² + x^-2 – 2) dx

= 1/3 x³ – 1/x – 2x + C