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Select the correct answer. What are the solutions to the equation x2 − 1 = 399? A. B. C. D.

Select the correct answer. What are the solutions to the equation x2 − 1 = 399? A. B. C. D.
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Select the correct answer. What are the solutions to the equation x2 − 1 = 399? A. B. C. D.

asked
User Zorobabel
by
7.3k points

2 Answers

6 votes
2x - 1 = 399
+1
2x = 400
/2
x = 200
answered
User IamMobile
by
8.4k points
2 votes

Answer:

x=20

x= -20

Explanation:

answered
User Dryadwoods
by
8.2k points
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