Multiply: (x + 3)(x2 + 5x – 4)

(x + 3)(x^2 + 5x – 4) = x^3 + 5x^2 - 4x + 3x^2 + 15x - 12 = x^3 + 8x^2 + 11x - 12

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Asked 8/6/2012 11:14:06 AM

Updated 115 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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3

(x + 3)(x^2 + 5x – 4)

= x^3 + 5x^2 - 4x + 3x^2 + 15x - 12

= x^3 + 8x^2 + 11x - 12

= x^3 + 5x^2 - 4x + 3x^2 + 15x - 12

= x^3 + 8x^2 + 11x - 12

Added 115 days ago|4/27/2018 12:29:48 AM

This answer has been confirmed as correct and helpful.

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

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

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

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)

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

18 + 5 = 23

Added 6/2/2014 11:48:43 AM

This answer has been confirmed as correct and helpful.

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