By Ron Larson

ISBN-10: 1305071735

ISBN-13: 9781305071735

ALGEBRA AND TRIGONOMETRY: genuine arithmetic, actual humans, seventh version, 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 instructing more uncomplicated and aid scholars prevail. maintaining the sequence’ emphasis on scholar aid, chosen examples through the textual content contain notations directing scholars to prior sections to check suggestions and abilities had to grasp the cloth to hand. The e-book additionally achieves accessibility via cautious writing and design—including examples with certain recommendations that start and finish at the similar web page, which maximizes clarity. equally, side-by-side suggestions exhibit algebraic, graphical, and numerical representations of the math and help quite a few studying kinds. Reflecting its subtitle, this crucial revision focuses greater than ever on displaying scholars the relevance of arithmetic of their lives and destiny careers.

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

**Sample text**

7x4 − x2 − 4x + 2) − (3x4 − 4x2 + 3x) = 7x4 − x2 − 4x + 2 − 3x4 + 4x2 − 3x Distributive Property = (7x4 − 3x4) + (−x2 + 4x2) + (−4x − 3x) + 2 Group like terms. = 4x4 + 3x2 − 7x + 2 Combine like terms. com. Find the difference (2x3 − x + 3) − (x2 − 2x − 3) and write the resulting polynomial in standard form. To find the product of two polynomials, use the left and right Distributive Properties. Remark When a negative sign precedes an expression within parentheses, treat it like the coefficient (−1) and distribute the negative sign to each term inside the parentheses.

13)√17 83. √ 84. 2−2)√75 + 3√8 85. 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.

So, x3 − x2 + 4x − 4 = (x − 1)(x2 + 4) Completely factored is completely factored, but x3 − x2 − 4x + 4 = (x − 1)(x2 − 4) Not completely factored is not completely factored. Its complete factorization is x3 − x2 − 4x + 4 = (x − 1)(x + 2)(x − 2). The simplest type of factoring involves a polynomial that can be written as the product of a monomial and another polynomial. The technique used here is the Distributive Property, a(b + c) = ab + ac in the reverse direction. ab + ac = a(b + c) a is a common factor.

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

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