Algebra: A Combined Approach (4th Edition)

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

Appendix B - Exercise Set: 29

Answer

$x = -1$ or $x = 0.6$

Work Step by Step

$x(5x + 2) = 3$ Step 1: is not need because there is no fractions. Step 2: Use the distribute property. $5x^2 +2x = 3$ Step 3: is not needed since no simplifying can be done on either side of the equation. Step 4: The equation is quadratic. $5x^2 +2x = 3$ Step 5: Rewrite the equation in standart form. $5x^2 + 2x-3 = 0$ Step 6: Factor. $(x +1)(5x -3) = 0$ Step 7: Set each factor equal to 0. $x +1 = 0$ or $5x -3 = 0$ Solve each equation. $x = -1$ or $5x = 3$ $x = -1$ or $x = 0.6$
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