Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 10 - Test: 7


x = -3 or x = -1

Work Step by Step

The logic here is that x/0 is undefined as it's infinite. If we divide 10 by 5 we get 2, if we divide 10 by 2 we get 5 and if we divide 10 by 0.1 we get 100. The smallest number possible (0) is infinite when divided by a number. Thus, we must make the denominator 0. $x^{2}$ + 4x + 3 = 0 (x+3)(x+1) = 0 Thus, x=-3 or x=-1
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