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algebra 2020 summer

 
 
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Re: algebra 2020 summer
WangDr. Kevin - 2020年08月9日 Sunday 23:40
 

This is for the MC II-A course.

Question 7.28 is referring to question 7.8: 

Let $a$ be a real number, and the equation $x^2+a^2x+a=0$ has real roots for $x$. Find the maximum possible root $x$.

The solution to Question 7.8 is in the lecture video, and also available in the book.  Question 7.28 is an additional question based on that.

To James Shi: Good! This is the same question in MC III.  There are multiple practices with this technique and I hope everyone learns the mathematical ideas behind it.