### Quadratic Roots

So I’m the scribe today and hopefully you guys get something from my post. This isn’t going to be long but I will try my best to explain what we just have learned today :)

Today in class, Mr. K wrote these problems on the board for us to do:

Example #1:

For what values of *k* will the sum of the roots of the following equation be 8?

x²-(k²-2k)x+3=0

*Remember! To do this, first set up what’s a, b, and c.**solving an equation always means finding the roots! *

Well, I was having trouble on the first roots problem. But thanks to Mr. K for helping me out and refreshing my memory about the quadratic stuffs because to let you guys know, I really have a bad memory.

Example #2:

Find the one quadratic function whose roots are 3/2 and -1/4. Is the equation unique?

Example #3:

If 3x²-mx+2=0 can be factored, what values of *m* are possible?

Example #4:

For what values of k will the equation 2x²+4x+(2+k-k²)=0 have *exactly* one root?***LOOK FOR THE DISCRIMINANT!**

And for the last thing we did in class was we took down some notes in our dictionary called *WORKING WITH QUADRATIC ROOTS.*

So..time to say bye now because I’ve done what I was supposed to get done :) and oh yah, the scribe on Monday is Jackie S. Have fun!

## 1 Comments:

that was really good and refreshing, good job

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