MTH1120 Module 2 Worked-Out Homework.docx

# MTH1120 Module 2 Worked-Out Homework.docx - Module 2...

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Module 2 Worked-Out Homework Section 10.2 Exercise Set Rewrite in radical notation. 1. 8. ( xy ) 1 4 a 1 n = n a Therefore the answer is; ( xy ) 1 4 = 4 xy Rewrite expression with rational exponents. 2. 26 . 5 13 x n a = a 1 n Therefore the answer is; 5 13 x = 13 x 1 5 10.3 Exercise Set Use the product rule to multiply. 3. 2. 7 5 n a n b = n ab 7 5 = 7 5 7 5 = 35 Therefore the answer is 35

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Multiply and simplify. 4. 65. 12 x 3 x 12 x 3 x = 12 x 3 x 12 x 3 x = 36 x 2 36 x 2 = 6 x Therefore is answer is 6 x Section 10.4 Application Exercises 5. 82. Find the perimeter and area of the rectangle. P = 2 L + 2 W P = 2 4 20 + 2 80 Simplify first term. ¿ 8 20 + 2 80 Factor out perfect square for 8 20 8 2 2 5 Reduce indexes 8 2 2 5 8 2 5 ¿ 16 5 80 4 20
Factor 2 80 2 4 2 5 2 4 2 5 2 4 5 ¿ 8 5 16 5 + 8 5 = 24 5 Therefore the perimeter is 24 5 feet.
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