Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 2 - Real Numbers - 2.4 - Exponents - Problem Set 2.4: 97

Answer

$= \frac{25}{4}$

Work Step by Step

We plug in $x = - \frac{1}{2}$ and $y= 2$ to obtain: $= x^{2} -2xy + y^{2}$ $= (-\frac{1}{2})^{2} -2(-\frac{1}{2})(2) + 2^{2}$ $= (\frac{1}{4}) +(\frac{2}{2})(2) + 2^{2}$ $= (\frac{1}{4}) +1(2) + 4$ $= \frac{1}{4} + 6$ $= \frac{25}{4}$
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