Multiply: 1. (x + 4)(x – 4) 2. (5x + 4)(3x – 2) 3. (x + 5) 2 x 2 – 16 15x 2 + 2x – 8x x Warm-Up

7.3 Binomial Radical Expressions Objective: To learn how to add, subtract, multiply and divided radicalexpressions. State Standard – 15.0 Students will be able to solve radical expressions. ================================================ Like radicals – are radicals expressions that have the same index and the same radicand.

Example 1: Add or Subtract if possible. a. 7 xy + 3 xy b. 2 x – 2 53 Not Possible 3 (7 + 3) xy 10 xy

On White Board: Add or Subtract if possible. a b. b.7 5 – 2 5 c. c.4 xy + 5 xy4 Not Possible xy

Example 3: Simplify before adding or subtracting – – –

On White Board: Simplify before adding or subtracting – – – 15 2

7.3 Guided Practice Page 388 – – 12 and 27 – 28

a. ( )(1 – 5 3 ) b. (3 + 7 )( 3 – 7 ) Example 4: Multiply. 2 2 – 58 – 6 3– – 20(3) 3 2 – ( 7 ) 2 9 – 7 =

a. (2 + 3 )(2 + 3 ) b. (1 + 6 )( 1 – 6 ) On White Board: Multiply. 4 – – ( 6 ) 2 1 – 6 =

Example 6: Divide and simplify. 2 – ( 4 – 3 ) 8 – 2 3 – – 3 11 –

On White Board: Divide and simplify – 15 ( ) –

7.3 Guided Practice (cont.) Page 388 – – 15 and 21 – 25

7.3 HOMEWORK Page 388 – 389 GP#1 1 – 12 and 27 – 28 GP#2 13 – 15 and 21 – 25 HW 39 – 41