Algebra: Chapter 11-6, p 504
Addition and Subtraction of Radical Expressions
To add and subtract radical expressions, you can use the same distributive property we have used in the past. You may have to rationalize the denominator and after that, you might be able to factor and combine expressions.
Follow along:
`sqrt(3) + sqrt(1/3) = sqrt(3) + sqrt(1)/sqrt(3)`
= `sqrt(3) + sqrt(1)/sqrt(3) * sqrt(3)/sqrt(3)`
= `1sqrt(3) + [sqrt(3)]/3 = 4/3 sqrt(3)`
The best way is to see some more examples, click here for them!
Math-8: Chapter 11-9, p 594
Transformations
There are 3 types of transformations:
- A translation is a “sliding” a figure horizontally, vertically or diagonally
- A rotation is turning a figure about a point
- A reflection is “flipping” a figure over a line
When you draw a figure and its reflection, you can create a figure that is SYMMETRIC. Where you can draw a line and have both halfs be mirror images is called the “Line of Symmetry”.