Question

Lim x→∞ √(25x² - 9x - 6) - 5x + 3 = ...
pakai cara yaa..

Answer 1

Lim x ---> ∞ √(25x^2 - 9x - 6) - √(5x + 3)^2
= lim x --> ∞ √(25x^2 - 9x - 6) - √(25x^2 + 30x + 9)
semua dibagi dengan x^2
= √25 - √25
= 0

Answer 2

lim x⇒∞ √25x²-9x-16 - √(5x+3)²

lim x⇒∞ √25x²-9x-16 - √25x²+30x+9
gunakan rumus:
b-q/2√a

b-q/2√a= -9-30/2√25=

=-39/2.5

=-39/10=-3,9