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Q: Multiply: (x + 3)(x2 + 5x – 4)
A: (x + 3)(x^2 + 5x – 4) = x^3 + 5x^2 - 4x + 3x^2 + 15x - 12 = x^3 + 8x^2 + 11x - 12
Question
Asked 8/6/2012 11:14:06 AM
Updated 54 days ago|4/27/2018 12:29:48 AM
1 Answer/Comment
Edited by Masamune [4/27/2018 12:29:46 AM]
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(x + 3)(x^2 + 5x – 4)
= x^3 + 5x^2 - 4x + 3x^2 + 15x - 12
= x^3 + 8x^2 + 11x - 12
Added 54 days ago|4/27/2018 12:29:48 AM
This answer has been confirmed as correct and helpful.
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Questions asked by the same visitor
Reduce to simplest terms: 30x4y2 18xy3 please show work
Weegy: The simplest form of 3 8/10 is ; convert this mixed fraction to improper fraction ; 38/10 ; factor both numerator and denominator; 2(19) / 2(5) ; by elimination ; 19/5 ; therefore the lowest simplest form is 3 4/5. User: Translate into a matimatical sentence: ‘ five less than twice a number’ Weegy: Five less than twice a number is 2n - 5. User: The width of a rectangle is x inches. The length of that rectangle is 4 inches less than three times the width. If the perimeter is 40 inches, what is the length and width of this rectangle? Show all of the work using algebra. Weegy: P=2L + 2W 40=2(8) + 2(12 the L=16 and the W= 24 hope it will help you User: Find three consecutive even numbers whose sum is 42. Show all your work using algebra. User: True or false 5x2 =(5x)2 Weegy: 8x (More)
Question
Expert Answered
Updated 4/1/2014 9:28:38 PM
1 Answer/Comment
5x^2 =(5x)^2 This is FALSE.
(5x)^2 = 25x^2
Added 4/1/2014 9:28:38 PM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [4/1/2014 9:28:45 PM]
Factor: x2 + 3x + 7x + 21 show work please
Question
Not Answered
Updated 7/28/2014 8:10:05 PM
1 Answer/Comment
x^2 + 3x + 7x + 21 = x^2 + 10x + 21 = (x + 3)(x + 7)
Added 7/28/2014 8:10:02 PM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [7/29/2014 3:02:41 AM]
Factor: x2 + 3x + 7x + 21 User: Factor: x2 – 1 User: Factor: 4x2 – 81y2
Weegy: 4x2 – 81y2 = (2x - 9y)(2x + 9y) User: Factor: x2 – 11x + 18 Weegy: x2 – 11x + 18 = (x-9)(x-2) (More)
Question
Expert Answered
Updated 10/21/2014 11:04:07 AM
18 Answers/Comments
farrukh-expert, please carefully check conversation with multiple questions. Sometimes the questions are just the same. Moderators will edit out unnecessary notes and repeated question to make the conversation clear.
Added 10/21/2014 10:52:27 AM
Deleted by jeifunk [10/21/2014 10:53:32 AM], Undeleted by jeifunk [10/21/2014 10:55:41 AM]
the factors are (x + 3) (x + 7) not (x - 3) (x - 7)
because it will make it as x^2 - 7x - 3x + 21 which will become x^2 - 10x + 21 (see its minus not plus) whole equation goes wrong if its mistakenly involve minus instead of plus
Added 10/21/2014 10:52:36 AM
thanks jeifunk for understanding this thing. i was continuously pointing out thing but was unable to make you understand.
Added 10/21/2014 10:55:07 AM
I am referring to the first question. You answer is right. My apologies.
User: Factor: x2 + 3x + 7x + 21
Weegy: X2-10x+21 = (x-3)(x-7)

The answer should be positive : X2 + 10x + 21 = (x + 3)(x + 7)
Added 10/21/2014 10:56:21 AM
its ok no problem. we are humans and mistakes mostly happens by humans.
Added 10/21/2014 10:57:31 AM
Solve by using PEMDAS: 6*3+10/2
Question
Not Answered
Updated 6/2/2014 11:48:43 AM
1 Answer/Comment
6*3+10/2;

18 + 5 = 23
Added 6/2/2014 11:48:43 AM
This answer has been confirmed as correct and helpful.
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