Warm up

Add and Subtract Rational Expressions EQ: What are the steps for adding or subtracting rational expressions with different denominators? Assessment: Students will write a summary on how to apply operations of rational numbers.

KEY CONCEPT

Example One

STEPS to Find LCM STEP 1 Factor each polynomial. Write numerical factors as products of primes. STEP 2 Form the LCM by writing each factor to the highest power it occurs in either polynomial.

Example Two

Example Three

Example Four

KEY CONCEPT

STEPS to Add and Subtract unlike denominators Factor the denominators if possible Find the LCD Multiply by the LCD Add or Subtract numerators Simplify

Example Five

Example Six

Warm up 15 4𝑥 + 5 4𝑥 3𝑥 𝑎𝑛𝑑 3 𝑥−2 Perform the indicated operation. Find the LCM of the Polynomials 3𝑥 𝑎𝑛𝑑 3 𝑥−2

Example Seven

Example Eight Subtract :

Example Nine

Example Ten

Write your Summary to the Essential Question: Homework Pg. 586 3-30 (3) Write your Summary to the Essential Question: What are the steps for adding or subtracting rational expressions with different denominators?