Question and answer
Solve the equation by factoring. x2 = 81 a. {81,9} b. { -9,9} c. {9,0} d. {0,0}
s
x^2 = 81 when x*x = 9*9 , x= 9 when x*x= (-9)*(-9) , x= -9 So the solution for x^2 = 81 is {-9 ,9} .
Question
Asked 12/1/2014 6:20:37 AM
Updated 12/2/2014 8:11:24 PM
1 Answer/Comment
Get an answer
New answers
Rating
8
x^2 = 81
when x*x = 9*9 , x= 9
when x*x= (-9)*(-9) , x= -9
So the solution for x^2 = 81 is {-9 ,9} .
Added 12/2/2014 8:11:24 PM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [12/2/2014 8:21:40 PM], Rated good by andrewpallarca
Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
Questions asked by the same visitor
Solve the equation by factoring. x2 = 81
Weegy: (x-9) (x+9)User: Solve the equation by factoring. x2 = 81 (More)
Question
Updated 12/4/2014 10:11:41 PM
1 Answer/Comment
x^2 = 81
x^2 - 81= 0
(x - 9)(x+ 9) = 0
when x - 9 = 0 , x = 9
when x + 9 = 0 , x = -9
Added 12/4/2014 10:11:41 PM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [12/5/2014 4:31:24 AM], Rated good by andrewpallarca
Solve the equation by using the Square Root Property. x2 - 2x + 1 = 18
Question
Updated 12/4/2014 2:17:39 AM
1 Answer/Comment
x^2 - 2x + 1 = 18
(x - 1)^2 = 18
x - 1 = ±3*2^1/2
x = ±3*2^1/2 + 1
Added 12/4/2014 2:17:39 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [12/4/2014 6:58:34 AM]
Which of the following is not a theory for the decline of the Mayan civilization? a. a natural disaster c. a lack of invention and adaptation b. the invasion by another group d. an internal revolt
Weegy: The invasion by another group is not a theory for the decline of the Mayan civilization. en.wikipedia.org/wiki/Minoan_civilization (More)
Question
Updated 12/1/2014 8:08:08 AM
0 Answers/Comments
Which of the following is the sum of the solutions of x2 - 2x -8 = 0? a. -6 c. 2 b. -4 d. -2
Weegy: The sum of x2 - 2x -8 = 0 is equal to d. -2 (More)
Question
Updated 12/1/2014 7:14:29 AM
1 Answer/Comment
x^2 - 2x - 8 = 0;
(x - 4)(x + 2) = 0;
x - 4 = 0;
x = 4;
x + 2 = 0;
x = -2;
The sum of of the solutions of x^2 - 2x -8 = 0 is 2.
4 + (-2) = 2
Added 12/1/2014 7:14:27 AM
This answer has been confirmed as correct and helpful.
Write a synonym of the word manifest.
Weegy: A synonym for manifest is: palpable. (More)
Question
Updated 12/3/2014 1:21:51 PM
0 Answers/Comments
34,446,803
questions answered
Popular Conversations
The correct plural of the noun attorney is _______. The primary ...
Weegy: The correct plural of noun attorney is attorneys.
9/17/2021 5:26:50 PM| 12 Answers
A child s temperament is primarily influenced by _______ factors. The ...
Weegy: A child s temperament is primarily influenced by BIOLOGICAL factors.
9/9/2021 6:19:31 PM| 6 Answers
Simplify 20 + (2 + r).
Weegy: 20 + (2 + r) User: simplify 7.5 + n + 9.63. Weegy: 7.5 + n + 9.63 = n + 17.13 User: 7.95 - 3.86 + n. ...
9/9/2021 2:42:29 PM| 4 Answers
The jurisdiction receiving mutual aid can ____________ resources if ...
Weegy: The jurisdiction receiving mutual aid can DECLINE resources if they do not meet its needs. User: Which NIMS ...
9/9/2021 6:28:24 PM| 3 Answers
S
L
Points 634 [Total 868] Ratings 1 Comments 624 Invitations 0 Offline
S
L
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
P
1
L
P
1
Points 590 [Total 6463] Ratings 10 Comments 490 Invitations 0 Offline
S
L
Points 403 [Total 569] Ratings 4 Comments 363 Invitations 0 Offline
S
L
P
P
L
P
Points 349 [Total 7559] Ratings 11 Comments 239 Invitations 0 Offline
S
L
R
P
Points 185 [Total 3134] Ratings 7 Comments 115 Invitations 0 Offline
S
L
P
P
Points 133 [Total 3908] Ratings 1 Comments 123 Invitations 0 Offline
S
L
L
P
Points 131 [Total 5926] Ratings 1 Comments 121 Invitations 0 Offline
S
L
Points 126 [Total 1478] Ratings 1 Comments 116 Invitations 0 Offline
S
L
Points 116 [Total 142] Ratings 6 Comments 56 Invitations 0 Offline
S
L
Points 111 [Total 137] Ratings 0 Comments 111 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.