A community for students.
Here's the question you clicked on:
 0 viewing
Matt71
 3 years ago
A number is expressed as N=(x^2169)+(x13)^2
1. Factorise (x^2169)+(x13)^2 completely
2. Explain why N is an even number for any value of x
3. Hence, given that N=(83^2169)+70^2, without evaluating for N, find the 2 factors of N which are between 10 and 100
Matt71
 3 years ago
A number is expressed as N=(x^2169)+(x13)^2 1. Factorise (x^2169)+(x13)^2 completely 2. Explain why N is an even number for any value of x 3. Hence, given that N=(83^2169)+70^2, without evaluating for N, find the 2 factors of N which are between 10 and 100

This Question is Closed

myininaya
 3 years ago
Best ResponseYou've already chosen the best response.2So have you expanded N first by doing (x13)(x13)?

myininaya
 3 years ago
Best ResponseYou've already chosen the best response.2And then you will collect like terms for N and then you can factor it

Matt71
 3 years ago
Best ResponseYou've already chosen the best response.02x(x13) right? But for me the real problem is with the second and last number

myininaya
 3 years ago
Best ResponseYou've already chosen the best response.2Where did the extra x come from?

myininaya
 3 years ago
Best ResponseYou've already chosen the best response.2There is something missing though

myininaya
 3 years ago
Best ResponseYou've already chosen the best response.2\[x^2169+(x13)^2\] \[x^2169+(x^22(13)x+169)\] Is this what you did?

myininaya
 3 years ago
Best ResponseYou've already chosen the best response.2Gosh you are right Its late here

myininaya
 3 years ago
Best ResponseYou've already chosen the best response.2Ok So you have 2x(x13) And it has the factors 2, x, x13 Since it has the factor 2 , then that means N is divisble by 2 which means that N is ____?

Matt71
 3 years ago
Best ResponseYou've already chosen the best response.0Eveeen ohohhhhh, of course, dang can't believe I missed that

himanshu31
 3 years ago
Best ResponseYou've already chosen the best response.1first two parts have been explained by @myininaya for the last part put x=83 in 2x(x+13) u get 2*83*96..this means two factors are 83 and 96

himanshu31
 3 years ago
Best ResponseYou've already chosen the best response.1sorry the eq is 2x(x13)..factors are 83 and 70

Matt71
 3 years ago
Best ResponseYou've already chosen the best response.0Well, thanks to you guys, sorry I only got one medal to give
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.