#### Answer

a. 98
b. 98

#### Work Step by Step

2$x^{2}$
a.
x=7
2$x^{2}$=2$\times$$7^{2}$=2$\times49$=98
b.
x=-7
2$x^{2}$=2$(-7)^{2}$=2$\times49=98$

Published by
Pearson

ISBN 10:
0321726391

ISBN 13:
978-0-32172-639-1

a. 98
b. 98

2$x^{2}$
a.
x=7
2$x^{2}$=2$\times$$7^{2}$=2$\times49$=98
b.
x=-7
2$x^{2}$=2$(-7)^{2}$=2$\times49=98$

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