Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Chapter 6 - Radical Functions and Rational Exponents - 6-6 Function Operations - Lesson Check - Page 401: 1

Answer

$(f \cdot g)(x) = f(x) \cdot g(x) = 3x^3 - 2x^2 + 3x - 2$

Work Step by Step

This exercise asks us to multiply the two functions together. Let's write out the problem: $(f \cdot g)(x) = f(x) \cdot g(x) = (3x - 2)(x^2 + 1)$ Use the FOIL method to distribute the terms: $(f \cdot g)(x) = f(x) \cdot g(x) = (3x)(x^2) + (3x)(1) + (-2)(x^2) + (-2)(1)$ Multiply to simplify: $(f \cdot g)(x) = f(x) \cdot g(x) = (3x^3) + (3x) - (2x^2) - (2)$ Rewrite in a more conventional form in terms of decreasing powers: $(f \cdot g)(x) = f(x) \cdot g(x) = 3x^3 - 2x^2 + 3x - 2$
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