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

User Pitabas Prathal
by
7.3k points

1 Answer

3 votes

Answer:

x = 20

Explanation:

x² − 1 = 399

x² = 400

x = 20

User Rohit Raghuvansi
by
6.4k points
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