Tolong kak pembahasanya ​

= [4/(3 + 1) x^(3 + 1) -2/(1 + 1) x^(1 + 1) + x]¹-1

= [x⁴ -x² + x]¹-1

= (1⁴ -1² + 1) -((-1)⁴ -(-1)² + 1)

= 1 -1 = 0