Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Section 1.7: Multiplying & Dividing Real Numbers Intro: 222 2 2 2 2 2 2 Multiplying Real Numbers: 1. The product of two numbers with the same sign is ______________. 2. The product of two numbers with different signs is ______________. Example 1: Multiply. a. 6 4 b. 5 10 c. 2 1 RULE: For any number x, x 0 0 . Decimals & Fractions follow the same rules: a. 4 b. 20 5 1.2 0.05 Be careful with exponents! The exponent only applies to the expression its touching: a. 2 3 b. 3 2 c. 23 d. 32 Reciprocal or Multiplicative Inverse: Two numbers whose product is 1 are called ____________ or ________________ ___________ of each other. *0 does NOT have a reciprocal. Example 2: Find the reciprocals. a. 22 b. 3 16 c. 10 d. 1 Dividing Real Numbers: 1. The quotient of two numbers with the same sign is a ________________ number. 2. The quotient of two numbers with different signs is a ________________ number. Example 3: Divide. a. 24 4 RULE: For a 0 , b. 36 3 c. 0 a 0 and is undefined. a 0 Example 4: Simplify: 12 3 3 7 2 Example 5: Evaluate for x = -2 and y = -4. a. 5x y b. 3x 2y 2 5 3 4 3 d. 9 2