CP Algebra 2
March 24, 2015
8­2
Adding and Subtracting
Rational Expressions
8­2 Adding and Subtracting Rational Expressions (Monomials)
CP Algebra 2
March 24, 2015
Least Common Multiple (LCM):
Factor each monomial, then use each factor the greatest number of times it appears and simplify.
8­2 Adding and Subtracting Rational Expressions (Monomials)
CP Algebra 2
March 24, 2015
Examples:
1. 15a2bc3, 16b5c2, 20a3c6
8­2 Adding and Subtracting Rational Expressions (Monomials)
CP Algebra 2
March 24, 2015
2.
6m3n5, 42mnp2, 36m3n4p
8­2 Adding and Subtracting Rational Expressions (Monomials)
CP Algebra 2
March 24, 2015
Adding and Subtracting with Monomial Denominators
Step 1: Find the LCD of all fractions (LCM of the denominators)
Step 2: Multiply the fractions to get the LCD
Step 3: Simplify the numerators
Step 4: Add or Subtract
8­2 Adding and Subtracting Rational Expressions (Monomials)
CP Algebra 2
8­2 Adding and Subtracting Rational Expressions (Monomials)
March 24, 2015
CP Algebra 2
8­2 Adding and Subtracting Rational Expressions (Monomials)
March 24, 2015
CP Algebra 2
8­2 Adding and Subtracting Rational Expressions (Monomials)
March 24, 2015
CP Algebra 2
March 24, 2015
HW: 8­2 Skills Practice
#1, 2, 7­12
8­2 Adding and Subtracting Rational Expressions (Monomials)