To determine To simplify: The expression ( − 21 ) 2 . Explanation Result used: Let a and b be any real numbers or expressions for which the given roots exist. For any natural numbers m and n , n ≠ 1 , if n is even, then a n n = | a | . Calculation: The given expression is, ( − 21 ) 2 . Here, a = − 21 and n = 2 . Simplify the expression ( − 21 ) 2 as follows

Algebra and Trigonometry: Graphs and Models (6th Edition)

6th Edition

ISBN: 9780134179049

Author: Marvin L. Bittinger, Judith A. Beecher, David J. Ellenbogen, Judith A. Penna

Publisher: PEARSON

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Question

Chapter J.25, Problem 1E

To determine

To simplify: The expression (−21)2.

Expert Solution & Answer

Chapter J Solutions

Algebra and Trigonometry: Graphs and Models (6th Edition)

Ch. J.1 - In Exercises 1-6, consider the numbers 6, −2.45,...Ch. J.1 - In Exercises 1–6, consider the numbers 6, −2.45,...Ch. J.1 - In Exercises 1–6, consider the numbers 6, −2.45,...Ch. J.1 - In exercises 1–6, consider the numbers 6, −2.45,...Ch. J.1 - Prob. 5E Ch. J.1 - In Exercises 1–6, consider the numbers 6, −2.45,...Ch. J.2 - Name the property illustrated by the sentence. 1....Ch. J.2 - Prob. 2E Ch. J.2 - Prob. 3E Ch. J.2 - Prob. 4E

Ch. J.2 - Prob. 5E Ch. J.2 - Prob. 6E Ch. J.2 - Prob. 7E Ch. J.2 - Prob. 8E Ch. J.2 - Prob. 9E Ch. J.2 - Prob. 10E Ch. J.3 - Classify the inequality as true or false. 1. 9 <...Ch. J.3 - Prob. 2E Ch. J.3 - Prob. 3E Ch. J.3 - Prob. 4E Ch. J.3 - Prob. 5E Ch. J.3 - Prob. 6E Ch. J.4 - Simplify. 1. |−98| Ch. J.4 - Prob. 2E Ch. J.4 - Prob. 3E Ch. J.4 - Prob. 4E Ch. J.4 - Prob. 5E Ch. J.4 - Prob. 6E Ch. J.4 - Prob. 7E Ch. J.4 - Prob. 8E Ch. J.5 - Compute and simplify. 1. 8 − (−11) Ch. J.5 - Prob. 2E Ch. J.5 - Prob. 3E Ch. J.5 - Prob. 4E Ch. J.5 - Prob. 5E Ch. J.5 - Prob. 6E Ch. J.5 - Prob. 7E Ch. J.5 - Prob. 8E Ch. J.5 - Prob. 9E Ch. J.5 - Prob. 10E Ch. J.5 - Prob. 11E Ch. J.5 - Prob. 12E Ch. J.5 - Prob. 13E Ch. J.5 - Prob. 14E Ch. J.5 - Prob. 15E Ch. J.6 - Write interval notation. 1. {x| −5 ≤ x ≤ 5} Ch. J.6 - Prob. 2E Ch. J.6 - Prob. 3E Ch. J.6 - Prob. 4E Ch. J.6 - Prob. 5E Ch. J.6 - Prob. 6E Ch. J.6 - Prob. 7E Ch. J.6 - Prob. 8E Ch. J.6 - Prob. 9E Ch. J.6 - Prob. 10E Ch. J.7 - Prob. 1E Ch. J.7 - Prob. 2E Ch. J.7 - Prob. 3E Ch. J.7 - Prob. 4E Ch. J.7 - Prob. 5E Ch. J.7 - Prob. 6E Ch. J.7 - Prob. 7E Ch. J.7 - Prob. 8E Ch. J.7 - Prob. 9E Ch. J.7 - Prob. 10E Ch. J.8 - Prob. 1E Ch. J.8 - Prob. 2E Ch. J.8 - Prob. 3E Ch. J.8 - Prob. 4E Ch. J.8 - Prob. 5E Ch. J.8 - Prob. 6E Ch. J.8 - Prob. 7E Ch. J.8 - Prob. 8E Ch. J.9 - Calculate. 1. 3 + 18 ÷ 6 − 3 Ch. J.9 - Calculate. 2. 5 ∙ 3 + 8 ∙ 32 + 4(6 − 2) Ch. J.9 - Calculate. 3. 5(3 – 8 ∙ 32 + 4 ∙ 6 − 2) Ch. J.9 - Calculate. 4. 16 ÷ 4 ∙ 4 ÷ 2 ∙ 256 Ch. J.9 - Calculate. 5. 26 ∙2−3 ÷ 210 ÷ 2−8 Ch. J.9 - Prob. 6E Ch. J.9 - Prob. 7E Ch. J.9 - Prob. 8E Ch. J.10 - Determine the degree of the polynomial. 1. 5 − x6 Ch. J.10 - Prob. 2E Ch. J.10 - Prob. 3E Ch. J.10 - Prob. 4E Ch. J.10 - Prob. 5E Ch. J.10 - Prob. 6E Ch. J.10 - Prob. 7E Ch. J.10 - Prob. 8E Ch. J.11 - Prob. 1E Ch. J.11 - Prob. 2E Ch. J.11 - Prob. 3E Ch. J.11 - Prob. 4E Ch. J.11 - Prob. 5E Ch. J.12 - Prob. 1E Ch. J.12 - Prob. 2E Ch. J.12 - Prob. 3E Ch. J.12 - Prob. 4E Ch. J.12 - Prob. 5E Ch. J.12 - Prob. 6E Ch. J.13 - Prob. 1E Ch. J.13 - Prob. 2E Ch. J.13 - Prob. 3E Ch. J.13 - Prob. 4E Ch. J.13 - Prob. 5E Ch. J.13 - Prob. 6E Ch. J.14 - Prob. 1E Ch. J.14 - Prob. 2E Ch. J.14 - Prob. 3E Ch. J.14 - Prob. 4E Ch. J.14 - Prob. 5E Ch. J.14 - Prob. 6E Ch. J.14 - Factor the trinomial. 7. 2n2 − 20n − 48 Ch. J.14 - Prob. 8E Ch. J.14 - Prob. 9E Ch. J.14 - Prob. 10E Ch. J.14 - Prob. 11E Ch. J.14 - Prob. 12E Ch. J.15 - Prob. 1E Ch. J.15 - Prob. 2E Ch. J.15 - Prob. 3E Ch. J.16 - Factor the difference of squares. 1. z2 − 81 Ch. J.16 - Prob. 2E Ch. J.16 - Prob. 3E Ch. J.16 - Prob. 4E Ch. J.16 - Prob. 5E Ch. J.16 - Prob. 6E Ch. J.16 - Prob. 7E Ch. J.16 - Factor the sum or the difference of cubes. 8. m3 −...Ch. J.16 - Factor the sum or the difference of cubes. 9. 3a5...Ch. J.16 - Factor the sum or the difference of cubes. 10. t6...Ch. J.17 - Prob. 1E Ch. J.17 - Prob. 2E Ch. J.17 - Prob. 3E Ch. J.17 - Prob. 4E Ch. J.17 - Prob. 5E Ch. J.17 - Prob. 6E Ch. J.17 - Prob. 7E Ch. J.17 - Prob. 8E Ch. J.18 - Prob. 1E Ch. J.18 - Prob. 2E Ch. J.18 - Prob. 3E Ch. J.18 - Prob. 4E Ch. J.18 - Prob. 5E Ch. J.18 - Prob. 6E Ch. J.19 - Prob. 1E Ch. J.19 - Prob. 2E Ch. J.19 - Prob. 3E Ch. J.19 - Prob. 4E Ch. J.19 - Prob. 5E Ch. J.19 - Prob. 6E Ch. J.19 - Prob. 7E Ch. J.19 - Prob. 8E Ch. J.20 - Prob. 1E Ch. J.20 - Prob. 2E Ch. J.20 - Prob. 3E Ch. J.20 - Prob. 4E Ch. J.20 - Prob. 5E Ch. J.20 - Prob. 6E Ch. J.21 - Find the domain of the rational expression. 1. Ch. J.21 - Prob. 2E Ch. J.21 - Prob. 3E Ch. J.21 - Prob. 4E Ch. J.21 - Simplify. 5. Ch. J.21 - Simplify. 6. Ch. J.22 - Multiply or divide and, if possible, simplify. 1....Ch. J.22 - Prob. 2E Ch. J.22 - Prob. 3E Ch. J.22 - Prob. 4E Ch. J.22 - Multiply or divide and, if possible, simplify. 5....Ch. J.22 - Multiply or divide and, if possible, simplify. 6....Ch. J.23 - Add or subtract and, if possible, simplify. 1. Ch. J.23 - Prob. 2E Ch. J.23 - Prob. 3E Ch. J.23 - Prob. 4E Ch. J.23 - Add or subtract and, if possible, simplify. 5. Ch. J.23 - Add or subtract and, if possible, simplify. 6. Ch. J.24 - Simplify. 1. Ch. J.24 - Prob. 2E Ch. J.24 - Simplify. 3. Ch. J.24 - Prob. 4E Ch. J.24 - Simplify. 5. Note: b − a = −1(a − b) Ch. J.25 - Simplify. Assume that no radicands were formed by...Ch. J.25 - Prob. 2E Ch. J.25 - Prob. 3E Ch. J.25 - Prob. 4E Ch. J.25 - Prob. 5E Ch. J.25 - Prob. 6E Ch. J.25 - Prob. 7E Ch. J.25 - Simplify. Assume that no radicands were formed by...Ch. J.25 - Simplify. Assume that no radicands were formed by...Ch. J.25 - Prob. 10E Ch. J.25 - Prob. 11E Ch. J.25 - Prob. 12E Ch. J.25 - Simplify. Assume that no radicands were formed by...Ch. J.25 - Prob. 14E Ch. J.25 - Prob. 15E Ch. J.25 - Prob. 16E Ch. J.25 - Simplify. Assume that no radicands were formed by...Ch. J.25 - Simplify. Assume that no radicands were formed by...Ch. J.25 - Prob. 19E Ch. J.25 - Prob. 20E Ch. J.26 - Rationalize the denominator. 1. Ch. J.26 - Rationalize the denominator. 2. Ch. J.26 - Prob. 3E Ch. J.26 - Rationalize the denominator. 4. Ch. J.26 - Prob. 5E Ch. J.26 - Prob. 6E Ch. J.26 - Prob. 7E Ch. J.26 - Rationalize the denominator. 8. Ch. J.27 - Convert to radical notation and, if possible,...Ch. J.27 - Prob. 2E Ch. J.27 - Convert to radical notation and, if possible,...Ch. J.27 - Prob. 4E Ch. J.27 - Convert to radical notation and, if possible,...Ch. J.27 - Prob. 6E Ch. J.27 - Prob. 7E Ch. J.27 - Prob. 8E Ch. J.27 - Prob. 9E Ch. J.27 - Prob. 10E Ch. J.27 - Simplify and then, if appropriate, write radical...Ch. J.28 - Prob. 1E Ch. J.28 - Prob. 2E Ch. J.28 - Prob. 3E Ch. J.28 - Prob. 4E Ch. J.28 - Prob. 5E

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