warm up # _____ write on a new page*** add or subtract
TRANSCRIPT
Warm Up # _____Write on a new page***
Add or subtract.
5.3 Adding and Subtracting Rational Expressions
Objective: Students will be able to add and subtract rational expressions.
Adding and Subtracting Rational Expressions with Like Denominators Directions: Add or subtract. Identify any x-values for
which the expression is undefined. Example 1:
Example 2
Your turn… Example 3:
Example 4:
Least Common MultipleLCM – the smallest number that is a multiple of two
other numbers. (Ex: the LCM of 3 and 5 is 15, because that is the smallest number that is a multiple of both 3 & 5.)
Finding the LCM:Step 1: Factor each polynomial completely and write any
repeated factors as powers.Step 2: List the different factors. Take the highest power of
any common factors.
Finding the LCMFind the LCM for each pair.
Example 5: 4x3y7 and 3x5y4
Example 6: x2 – 4 and x2 + 5x + 6
Adding Rational ExpressionsAdd. Identify any values that make the expression
undefined. Example 7:
Example 8
Example 9
Homework for tonightHomework # ____
Textbook pg. 332 # 17, 18, 20, 21, 22, 23, 25, 29