. Write a proof for each of the following limits (Show your scratchwork before starting with the proof): (i) lim x→1 x2 + 2x + 1 2x − 3 = −4 (ii) lim x→−2 (x3 − 5x2 − x − 2) = −28. (iii) lim x→2 √ x2 + 1 = √ 5.

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