2.1 Q-5

Q5. $lim_{x \to 7} \frac{x ^{2} - 21}{x + 2}$

\section*{Solution:} $x \to 7 lim \frac{x ^{2} - 21}{x + 2} = \frac{( 7 ) ^{2} - 21}{7 + 2} = \frac{49 - 21}{9} = \frac{28}{9}$

Q5. $lim_{x \to 7} \frac{x ^{2} - 21}{x + 2}$

\section*{Solution:} $x \to 7 lim \frac{x ^{2} - 21}{x + 2} = \frac{( 7 ) ^{2} - 21}{7 + 2} = \frac{49 - 21}{9} = \frac{28}{9}$