# Get Algebra and Trigonometry: Real Mathematics Real People PDF

By Ron Larson

ISBN-10: 1305071735

ISBN-13: 9781305071735

ALGEBRA AND TRIGONOMETRY: genuine arithmetic, actual humans, seventh variation, is a perfect scholar and teacher source for classes that require using a graphing calculator. the standard and volume of the routines, mixed with fascinating functions and leading edge assets, make educating more straightforward and aid scholars be successful. maintaining the sequence’ emphasis on pupil aid, chosen examples through the textual content comprise notations directing scholars to past sections to study suggestions and abilities had to grasp the cloth to hand. The ebook additionally achieves accessibility via cautious writing and design—including examples with distinct recommendations that start and finish at the similar web page, which maximizes clarity. equally, side-by-side recommendations convey algebraic, graphical, and numerical representations of the math and help numerous studying kinds. Reflecting its subtitle, this important revision focuses greater than ever on displaying scholars the relevance of arithmetic of their lives and destiny careers.

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**Extra resources for Algebra and Trigonometry: Real Mathematics Real People**

**Example text**

E XAM P L E 11 Factoring the Sum of Cubes a. y3 + 125 = y3 + 53 Rewrite 125 as 53. = ( y + 5)(y2 − 5y + 25) b. 3x3 + 192 = 3( x3 + 64) 3 is a common factor. = 3(x3 + 43) Rewrite 64 as 43. = 3(x + 4)(x2 − 4x + 16) Factor. Checkpoint Factor each expression. a. x 3 + 216 b. 5y 3 + 135 Factor. com. Rewrite u6 − v6 as the difference of two squares. Then find a formula for completely factoring u6 − v6. Use your formula to factor completely x6 − 1 and x6 − 64. 3 Polynomials and Factoring Trinomials with Binomial Factors To factor a trinomial of the form ax2 + bx + c, use the following pattern.

186. Writing Explain what is meant when it is said that a polynomial is in factored form. 187. Error Analysis Describe the error. 9x2 − 9x − 54 = (3x + 6)(3x − 9) = 3(x + 2)(x − 3) 188. Think About It Give an example of a polynomial that is prime with respect to the integers. Factoring with Variables in the Exponents In Exercises 189 and 190, factor the expression as completely as possible. 189. x2n − y2n 190. 4 Rational Expressions Domain of an Algebraic Expression The set of real numbers for which an algebraic expression is defined is the domain of the expression.

3 −68 + 4 −5 + √33 √ 86. 1 87. 14 3 88. 5 89. 01 × 106 90. 12 × 10−2 + √15 Using Properties of Radicals In Exercises 91–94, use the properties of radicals to simplify each expression. 4 3 20 3 91. √ ) (−3x)4 3 40x5 √ 93. √12 ∙ √3 94. 3 2 √5x Simplifying a Radical Expression In Exercises 95–102, simplify each expression. 64. 65. √25 × 108 21 800 √ 2 3 32a 95. (a) √45 (b) b2 3 54 (b) 96. (a) √ √32x3y4 3 5 97. (a) √16x (b) √75x2y−4 4 3x4y2 (b) 5 160x8z4 98. (a) √ √ 99. (a) 2√50 + 12√8 (b) 10√32 − 6√18 100.

### Algebra and Trigonometry: Real Mathematics Real People by Ron Larson

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