A window through the walls of our classroom.  This is an interactive learning ecology for students and parents in my Pre-Cal Math 20S class.  This ongoing dialogue is as rich as YOU make it.  Visit often and post your comments freely. 

Monday, September 15, 2008

September 15, 2008

Excercise 9 : Factoring ax² + bx +c

For each question 1 to 5, factor each expression and write "prime" if not factorable. 

1.  a.) 2x² + 5x + 3 b.) 5x² + 6x + 1

2.  a.) 5a² - 16a + 3 b.) 3y² + 4y + 1

3.  a.) 24x² + 2x - 1 b.) 6y² + 20 + 23y

4.  a.) 10 + y - 2y² b.) 60y² - 27y - 60

5.  a.) 15x² + 37x + 20 b.) 15a² + 8a - 12

6.)  Solve for x: 6 - 2 [x - (3 + 4x) } = 8

7.)  Solve for x: 4 - x -1 / 2 = x

8.)  A square is inscribed in a circle.  If the area of the circle is 100pi cm², what is the are of the square? 

So this is everything we did in class.  .PLEASE DO ANY HOMEWORK YOU DIDN'T FINISH :)THANK YOU!!feel free to comment if I made any mistakes or forgotten anything.  .happy math, bye!