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

QAmmunity.org

My account
Edit my Profile
Private messages
My favorites

Ask a Question
Questions
Tags
Categories
Ask a Question

Govinda asked Dec 11, 2023

89,184 views

27 votes

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

Mathematics
high-school

Govinda asked Dec 11, 2023

by Govinda

2.9k points

0 Comments

Your comment on this question:

Email me at this address if a comment is added after mine:Email me if a comment is added after mine

Privacy: Your email address will only be used for sending these notifications.

Your answer

Email me at this address if my answer is selected or commented on:Email me if my answer is selected or commented on

Privacy: Your email address will only be used for sending these notifications.

2 Answers

23 votes

2x - 1 = 399
+1
2x = 400
/2
x = 200

Dave Loepr answered Dec 12, 2023

by Dave Loepr

3.1k points

0 Comments

Your comment on this answer:

Email me at this address if a comment is added after mine:Email me if a comment is added after mine

Privacy: Your email address will only be used for sending these notifications.

12 votes

Answer:

x=20

x= -20

Explanation:

Callmejeevan answered Dec 16, 2023

by Callmejeevan

2.6k points

0 Comments

Your comment on this answer:

Email me at this address if a comment is added after mine:Email me if a comment is added after mine

Privacy: Your email address will only be used for sending these notifications.

Ask a Question

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

1.6m questions

2.0m answers

0 Comments

Your comment on this question:

Your answer

2 Answers

0 Comments

Your comment on this answer:

0 Comments

Your comment on this answer:

Other Questions