$$ \left.\begin{array}{l} a) \displaystyle{} & b) \displaystyle{} & c) \displaystyle{} & d) \displaystyle{} \\ \end{array}\right. $$

$$ \left.\begin{array}{l} a) & b) & c) & d)\\ \end{array}\right. $$

$$ \left.\begin{array}{l} a) \displaystyle{} & b) \displaystyle{} & c) \displaystyle{} & d) \displaystyle{} \\ e) \displaystyle{} & f) \displaystyle{} & g) \displaystyle{} & h) \displaystyle{} \\ i) \displaystyle{} & j) \displaystyle{} & k) \displaystyle{} & l) \displaystyle{} \\ m) \displaystyle{} & & & \\ \end{array}\right. $$

$$ \left.\begin{array}{l} a) & b) & c) & d) \\ e) & f) & g) & h) \\ i) & j) & k) & l) \\ m) & & & \\ \end{array}\right. $$

$$ \left.\begin{array}{l} a) \displaystyle{} & b) \displaystyle{} & c) \displaystyle{} & d) \displaystyle{} \\ \end{array}\right. $$

$$ \left.\begin{array}{l} a) & b) & c) & d)\\ \end{array}\right. $$

$$ \left.\begin{array}{l} a) \displaystyle{} & b) \displaystyle{} \\ c) \displaystyle{} & d) \displaystyle{} \\ \end{array}\right. $$

$$ \left.\begin{array}{l} a) & b) \\ c) & d)\\ \end{array}\right. $$

$$ \left.\begin{array}{l} a) \displaystyle{log(x)=log (21)+log(12)} & b) \displaystyle{log(x)=log(2)-log(8)} \\ c) \displaystyle{Ln(x)=4Ln(5)} & d) \displaystyle{log(x)-log(12)=log(25)-2log(6)} \\ e) \displaystyle{log(x)+\frac{1}{2}log(25)=4log(2)} & f) \displaystyle{1+log(x)=log(3)-log(8)} \\ g) \displaystyle{2log(x)=2-log(5)} & h) \displaystyle{log(x^2)-log(x)=log(5)} \\ i) \displaystyle{log((x+1)^2)-log(x-16)=2} & j) \displaystyle{log(x^3)+3log(5)=3log(20)} \\ \end{array}\right. $$

$$ \left.\begin{array}{l} a) \displaystyle{x=252} & b) \displaystyle{x=\frac{1}{4}} \\ c) \displaystyle{x=625} & d) \displaystyle{x=\frac{25}{3}} \\ e) \displaystyle{x=\frac{16}{5}} & f) \displaystyle{x=\frac{3}{80}} \\ g) \displaystyle{x=2\sqrt{5}} & h) \displaystyle{x=5} \\ i) \displaystyle{x=49-20\sqrt{2},x=49+20\sqrt{2}} & j) \displaystyle{x=4} \\ \end{array}\right. $$

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