Tuesday, December 12, 2006
Adding / Subtracting
posted by siopao at 9:04 p.m.
Adding / Subtracting

a few practice Questions
We started the notes we an example - Probably to see what we knew about the topic.


To simplify algebraic Fractions:
1)Factor/ Find the LCD (lower common denominator)
*multiply the denominators together to find a common denominator
2)Change both fractions to have the same denominator
3)Find the restrictions
4)Add/subtract
5)Simplify
6)Re-check Restrictions

eg)


eg)


Ex 44 is homework
omit 20
 
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Cont'd Reducing Algebraic Fractions & Non Permissible Values
posted by siopao at 5:59 p.m.
The connection between numbers (fractions) and reducing expressions

-Factor it
-Cancel factors found in the numerator and the denominator
-Multiply / Simplify

Reduce the following fraction



Reduce the following expression



*When we Reduce and simplify algebraic fractions follow the following 5 steps:

1) Factor the numerator and the denominator
2) State the restrictions.
*What would make the denominator have a value of zero?
3) Reduce by any common terms
4) Factor out -1 if necessary
* (a - b) = -1(b - a)
5) Simplify

Eg)


Eg)


Sorry for being SO late in blogging, Its just that I wasnt feeling very good all weekend. To make up for me being late I will do December 12/06 also

Reducing algebraic fractions
Sorry Couldn't find a link forNon Permissible Values
Do exercises:
42 omit 12
43 omit 11

 
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Thursday, December 07, 2006
Rational Algebraic Expressions
posted by Ms. Armstrong at 12:27 p.m.
Here is an interactive site that explains, shows examples, and provides practise with algebraic expressions.

Give it a go!!
Ms. Armstrong
 
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Monday, December 04, 2006
The Problem with Parallelograms
posted by Ms. Armstrong at 9:08 p.m.
Hey Gummy Bears,
Here is a parallelogram problem for you to work on together. You can post comments, solutions, questions, ideas all in the interest of progressing the solution to the problem. Don't forget to use mathematical vocabulary so that everyone will know exactly what you are referring to. (No saying things like the number beside the thingy with the little side. ;^)

If a parallelogram is a non-rigid figure, find the minimum and maximum values for each of the diagonals if the lengths of the sides are 5 and 12.

For anyone wanting extra study tools, don't forget to try the multiple choice quizzes that I posted earlier this month.
 
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