y= (x+1) (x-3) tolong bantu yah

jawab

y = (x+1)(x-3)

u = x+1
u' = 1

v = x - 3
v' = 1

y' = u'v + uv'
y' = 1(x-3) +(x+1)1
y' = x - 3 + x  + 1
y' = 2x - 2

atau dengan cara lain
y = (x +1)(x-3)
y = x² - 2x - 3
y' = 2x - 2