Quadratics (id: 628c2ed7c)

本题目来源于试卷: Quadratics，类别为 IB数学

[填空题]
Let $f(x)=x^{2}-2 x-8$ , for x $\in \mathbb{R}$ .
1. Write down the y -intercept of the graph of y=f(x) .   
2. Solve the equation f(x)=0 .      
3. Find the equation of the axis of symmetry of the graph of y=f(x) .   

参考答案:
空格1: -8±2%  空格2: {-2|4}  空格3: {-2|4}  空格4: (x-1)^2-9 


本题详细解析:

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