2005 年

$a\cdot a(a+a)=$

If $a=1-2b$, then $b=$

If $\mathrm{f}(x)=2x^2-3x+4$, then $\mathrm{f}(1)-\mathrm{f}(-1)=$

$(2x-3)(x^2+3x-2)\equiv$

In the figure, the area of the trapezium is $12\text{ cm}^2$. Which of the following equations can be used to find $x$?

The figure shows the graph of $y=ax^2+x+b$. Which of the following is true?

If $\begin{cases}\beta=\alpha^2-3\\ \beta=4\alpha-3\end{cases}$, then $\beta=$

If the quadratic equation $kx^2+6x+(6-k)=0$ has equal roots, then $k=$

The solution of $2(3-x)>-4$ is

If $x^2+2ax+8\equiv(x+a)^2+b$, then $b=$