Lim x mendekati 9 x^2-8x-9:√x-3

Langsung aja y

lim x→9 (x²-8x-9)(√x+3) / (√x-3)(√x+3)

lim x→9 (x+1)(x-9)(√x+3) / (x - 9)

lim x→9 (x+1)(√x+3)

= (9+1)(√9 + 3)
= (10) (3+3)
= 60

Semoga berguna +_+