November 20 Pre-Test

Today we had a Pre-Test, these are some the concepts that was included in the Pre-Test.

Rational Numbers

*Can be written as a fraction

*Fractions
*Whole Numbers

*Mixed Numbers

*Decimals that end.

*Decimals With a Pattern.

Irrational Number
*Cannot be written as a Fraction
*Decimals with no end/repeating/pattern.


Radical Operations:
Adding/Subtracting:

When you have the same radicand/ike terms, you just simply add them together.

For Example:





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When both radicands does not have the same value you might consider factoring the number so it can have the same value.

For Example:


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*When a problem has same radicand but does not have the same root, you cannot add them together because they are not like terms.

For Example:



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Multiplying:

Dont forget to use FOIL whe multiplying.



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Be careful when subtracting after multiplying! Only add the like terms.
Also don't forget that there's always a one before the root.

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Rationalizing
The denominator is a sum of 3+√y, so we multiply numerator and denominator by the difference 3 - √y.

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The denominator is a difference of √7 - √5, so we multiply numerator and denominator by the sum √7 - √5



The test is on Monday, so be ready for it.

The next Scribe is ARJEL......