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= lim(x→2) (x+2)(x-2)/2.(x-2)
= lim(x→2) (x+2)/2
= (2+2)/2
= 2
2. lim(x→-1) (2x²-3x-5)/(x²-4x-5) ; bentuk 0/0, turunkan
= lim(x→2) (4x-3)/(2x-4)
= (4(-1)-3)/(2(-1)-4)
= -7/(-6
= 7/6
3. lim(x→1) (x³-1)/(x-1) ; bentuk 0/0, turunkan
= lim(x→1) (3x²)/(1)
= 3.(1)²
= 3