Like Terms and Unlike Terms
1. Go over the exam problem one by one.
2. Terms, coefficient, and constant terms
- The expression 2x – 3y + 8 consists of three terms. They are 2x, -3y and 8. The numerical part, including the sign, of a term is called the coefficient of the variable.
- Term 2x, the coefficient of x is 2
- Term -3y, the coefficient of y is -3
- Term 8, is called constant term
3. Classify the like terms and unlike terms: explained in class
4. Simplify the algebraic expression by combining (or collecting) like terms
- 2x + 3x = 5x
- 8y – 3y = 5y
- 3a + 4b – 2a + 5b = (3a -2a) + (4b +5b) = a + 9b
5. Home Work:
- Handout: two pages
- Workbook:
- page 21: 1, 2
- Page 22: 6, 9, 10
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