Simplifying Rational Expressions

First of all we played with the Google translator. Woohoo!

The class was kind of slow today, we just did some questions on simplifying rational expressions.

Some notes:

• We don't do subtraction in High school, we add a negative number.
• Give everybody a home

• Expressions are different from Equations:

In an expression, the denominator remains while in an equation,
the denominator is cleared out.

This is one of the expressions Mr. Kuropatwa asked us to do:



First, we factor it out.



Before we lose a mark, we should state the restrictions now.



Then we find the common denominators which is:



Now we should multiply each expressions with the number one, in another form, and it should give us the common denominator "because we built it that way".

,

Then we just add the numerators because we already have the common denominators.



This would be the final result.



But... in some expressions we could still further by factoring the numerator and reducing any common factors, but in this case we can't. Mr. K taught us a way to find out if we can still factor an expression, here's how:

We multiply the leading coefficient by the constant.


Then we look for the factor of that number that will add up to 9 which is the middle term.
In this case we can't and that makes it a PRIME number!

That's all I could say so see yah!

And Levi would be the next scribe...

Personal Muddiest point

My Muddiest Point: the bottom of my shoes.

For me...
-sometimes I get confused with word problems.
-I also get confuse when simplifying a term with a radical as a denominator.
'Basically I need help Evaluating a Radical question.'

Where am I???

Where am I??
I'm on Earth.. XD

Well Dr. Eviatar taught us the following:

Polynomials and Factoring:
I need some examples on the factoring part.

Analytic Geometry:
I know how to get the slope, but I need to know more about parallel and perpendicular.

Trigonometry:
I'm fine with solving right triangles, but I need some help with triangles with no right angles.
Especially when I need to use the SINE and COSINE law.

Radicals and Exponents:
I know most of the Exponents part, but I need to practice solving Radicals.



So that's where I am...
on EARTH...

OMG!!!
What an empty blog...
No one was blogging so Dr. Eviatar asked me to do a post. I wasn't paying much attention last class because I'm feeling lazy. Anyways, she helped us with some of the questions on Exercise 17: Trigonometry. I didn't remember how she do it, so i tried it on my own, please take a look and just blame me for any errors.


4.

BD-BC=CD

BD

Tan 38= 40/A

A= 40/Tan 38
Adjacent= 51.2= BD

BC

Tan 52= 40/A
A= 40/Tan 52
Adjacent= 31.4= BC

BD- BC= CD 51.2-31.4=CD 19.8= CD


5.

<EDC=?


BE

Tan 20= O/8
Tan 20 (8)= O
2.91= Opposite

BC- BE= EC
6- 2.91= 3.09


Tan <EDC= O/A
Tan <EDC= 3.09/8
Tan <EDC= 0.386= 21.1 degrees







Finish finally.
I'm not sure who haven't blog yet so I'll let Dr. Eviatar to pick the next blog.
T.Y. for viewing I guess.