### 2 Answers

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- Engr. RonaldLv 75 months ago
.........2x^2 - x - 1

lim ------------------

x->1..(x - 1)^2

.......(2x + 1)(x - 1)

lim --------------------- cancel out x - 1

x->1..(x - 1)(x - 1)

........2x + 1

lim -------------

x->1.x - 1

....2(1) + 1

=---------------

......1 - 1

=3/0

= ∞ Answer//

- DylanLv 65 months ago
(2x^2-x-1)/(x-1)^2

(x-1)(2x+1)/(x-1)^2

(2x+1)/(x-1)

Take limit

(2(1)+1)/((1)-1)

3/0

= infinity

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