Like Terms and Evaluating Expressions

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Presentation transcript:

Like Terms and Evaluating Expressions 8-9-16 Goals for today: Recognize and combine like terms. Evaluate expressions.

Like Terms and Evaluating Expressions 8-9-16 Warm Up: What are the coefficients in the polynomial -5x3 + 3x2 -4 2) Does the polynomial above have a linear term? How can you tell? Graph the following point on the coordinate plane (3, 5). Translate (slide) the point 5 spaces left and 4 spaces down. Label the new point

Like Terms and Evaluating Expressions 8-9-16 Like Terms --Be able to identify like terms in an expression

Like Terms and Evaluating Expressions 8-9-16 Like Terms (notes) All constants are like terms because we can combine (add) them. 6x + 5 - 8

Like Terms and Evaluating Expressions 8-9-16 Like Terms (notes) Terms with variables are like terms only if they have the same variables and same exponents. 3x – 4 + 5x

Like Terms and Evaluating Expressions 8-9-16 Like Terms (notes) In the expression below, what are the like terms? Combine the like terms to simplify the expression 8y + 5x – 4x + 3 + 9y - 8

Like Terms and Evaluating Expressions 8-9-16 Like Terms (notes) In the expression below, what are the like terms? Combine them to simplify. 2x2 + 3x – 15x2 + 7 -9x

Like Terms and Evaluating Expressions 8-9-16 Like Terms (notes) In the expression below, what are the like terms? Combine them to simplify. 8xy – 4x2y + 2x2y +1 -5xy + 7

Like Terms and Evaluating Expressions 8-9-16 Whiteboards Simplify the expression below. 4y + 9x – 2y – 4 + 8x

Like Terms and Evaluating Expressions 8-9-16 Whiteboards Simplify the expression. 2x2 + 5y2 – 4x2 + 6

Like Terms and Evaluating Expressions 8-9-16 Whiteboards Give an example of like terms (a pair) Give a non-example of like terms

Like Terms and Evaluating Expressions 8-9-16 Evaluating Expressions ---be able to correctly substitute in and solve equations

Like Terms and Evaluating Expressions 8-9-16 Evaluating Expressions (notes) Solve for A if x = 5, y = 7 A = 7xy

Like Terms and Evaluating Expressions 8-9-16 Evaluating Expressions (notes) Solve for A if x = 5, y = 7 A = 3x + y

Like Terms and Evaluating Expressions 8-9-16 Evaluating Expressions (notes) Solve for A if x = 5, y = 7 A = x2 - y

Like Terms and Evaluating Expressions 8-9-16 Whiteboards Solve for A if x = 4, y = 8 A = 2xy

Like Terms and Evaluating Expressions 8-9-16 Whiteboards Solve for A if x = 9, y = 12 A = 3y – 2x

Like Terms and Evaluating Expressions 8-9-16 Whiteboards Solve for A if x = 9, y = 12 A = x2 - y

Like Terms and Evaluating Expressions 8-9-16 Classwork Scavenger Hunt You can work on your own or in a group of 2.

Like Terms and Evaluating Expressions 8-9-16 Classwork Scavenger Hunt You can work on your own or in a group of 2.