Vocabulary term coefficient like term

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Simplifying Algebraic Expressions
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Vocabulary term coefficient like term Learn to simplify algebraic expressions. Vocabulary term coefficient like term

In the expression 7x + 9y + 15, 7x, 9y, and 15 are called terms In the expression 7x + 9y + 15, 7x, 9y, and 15 are called terms. A term can be a number, a variable, or a product of numbers and variables. Terms in an expression are separated by + and –. In the term 7x, 7 is called the coefficient. A coefficient is a number that is multiplied by a variable in an algebraic expression. A variable by itself, like y, has a coefficient of 1. So y = 1y. Coefficient Variable 7 x

Like terms are terms with the same variable raised to the same power Like terms are terms with the same variable raised to the same power. x, x2, y, y3 x’s can only be combined with other x’s, x2 can only be combined with other x2 The coefficients do not have to be the same. Constants, like 5, .6, and 3.2, are also like terms, combine them like normal.

Additional Example 1: Identifying Like Terms Identify like terms in the list. 3t 5w2 7t 9v 4w2 8v Look for like variables with like powers. 3t 5w2 7t 9v 4w2 8v Like terms: 3t and 7t 5w2 and 4w2 9v and 8v Use different shapes or colors to indicate sets of like terms. Helpful Hint

Additional Example 2: Simplifying Algebraic Expressions 3a2 + 5b + 11b2 – 4b + 2a2 – 6

6(4 + 9b) + 2b - 17

4y + 6(-8 + 5y) + 12

4y + 6(-8 – 5y)