HKCEE - 2006 - Paper 1 -

Ans: $a^{21}$
$\begin{array}{cl}
& \dfrac{(a^3)^5}

Ans: B
$\begin{array}{cl}
& (2x)^3 \cdot x^3 \\
= 

Ans: B
Sub. $x=0$ into $y= 4^x$, we have

$\begin{array}{rcl

Ans: $\dfrac{n^5}{m^3}$
$\begin{array}{cl}
& \dfr

Ans: A
$\begin{array}{cl}
& 3^{2n} \cdot 4^n \\
= 

Ans: C
$\begin{array}{cl}
& \dfrac{3\sqrt{a}}{2} &

Ans: $ab^3$
$\begin{array}{cl}
& \dfrac{(ab)^3}{a

Ans: B
$\begin{array}{cl}
& \left(\dfrac{1}{2}\ri

Ans: A
$\begin{array}{cl}
& \sqrt{49a} – \sqr

Ans: $\dfrac{x^{23}}{y^3}$
$\begin{array}{cl}
& \

Ans: B
$\begin{array}{cl}
& 2^n \cdot 3^n \\
= & (

Ans: $a^4b^{15}$
$\begin{array}{cl}
& a^{14}\left

Ans: B
$\begin{array}{rcl}
\left(\dfrac{1}{9}\right)^

Ans: C
$\begin{array}{rcl}
\dfrac{1}{\sqrt{a^3}} \div \

Ans: $\dfrac{x^{57}}{y^6}$
$\begin{array}{cl}
& \

Ans: A
$\begin{array}{cl}
& 5^{334}\left(\dfrac{-