Register
Select the correct answer. What are the solutions to the equation x2 − 1 = 399? A. B. C. D.
221k views
0 votes
Select the correct answer. What are the solutions to the equation x2 − 1 = 399? A. B. C. D.

User Zorobabel
by
4.0k points

2 Answers

6 votes
2x - 1 = 399
+1
2x = 400
/2
x = 200
User IamMobile
by
4.9k points
2 votes

Answer:

x=20

x= -20

Explanation:

User Dryadwoods
by
4.6k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

4.7m questions

6.2m answers

Other Questions

Pizza planet is running a special 3 pizzas for 16.50. What is the unit rate for one pizza
I need to simplify this expression.
Which property is shown in the problem below? -8(x-3y-9) = -8x+24y+72 A the associative property B the commutative property C the distributive property D the division property ASAP
What is the domain and range?
What does translation means in math? I am taking a quiz on this right now, I need an answer ASAP!!!!!!
Link Copied!