bantu jawab ya teman teman terakhir

Misal:
U= 3x - 5 U'= 3
V = 2x+1 V'= 2
F'(x) = (U'V - UV') / V²
= (3(2x+1) - (3x-5)2) /(2x+1)²
= (6x + 3 - (6x-10)) / (4x² +4x +1)
= (6x + 3 - 6x +10) / (4x² +4x +1)
= 13 /(4x² +4x +1=