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### Text of Adding and Subtracting Rational Expressions Advanced Math Topics Mrs. Mongold

Mrs. Mongold

• Adding and Subtracting Rational ExpressionsFinding Least Common Multiples and Least Common Denominators!Use prime factorization

Example: Find the LCM of 6 and 46 = 234 = 22LCM= 223 = 12

• Find the LCM1. a2 6a + 9 and a2 + a -12

• Find the LCM2. 18r2s5, 24r3st2, and 15s3t

• Find the LCM 3. 12a2b4, 27ac3, and 18a5b2c

• Find the LCM4. 15a2bc3, 16b5c2, 20a3c6

• Find the LCM5. p3 + 5p2 + 6p and p2 + 6p + 9

• Find the LCM6. q2 4q + 4 and q3 3q2 + 2q

• Find the LCM7. 2k3 5k2 12l and k3 8k2 +16k

• Find the LCM8. x3-x2 2x and x2 4x + 4

• Find the LCM9. 6m3n5, 42mnp2, 36m3n4p

• Add and Subtract Rational ExpressionsSame as fractionsTo add two fractions we find the LCD, the same things is going to happen with rational expressions

• Examples10. Simplify

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