Friday

April 17, 2015

April 17, 2015

Posted by **Monica** on Saturday, October 7, 2006 at 2:06pm.

Very Simple Question

How would you solve it:

(1+x^2)(1-x^3)

(1+x^2)(1-x^3)

This is the same as

1*(1-x^3) + (x^2)*(1-x^3) = 1 - x^3 + x^2 - x^5

We have

1 who call 3

1+3 who call 3

1+3+9 who call 3

1+3+9+27 who call the remaining 60 who don't need to call anyone.

So it looks like 40 will need to call someone and 60 won't need to call anyone. If I understand the question correctly.

Check that, of the last 27 who need to call, not everyone made a call. There were 60 people remaining to be called and only 20 of the 27 needed to call someone. 7 of the 27 didn't need to call anyone, so 67 people total did not need to call anyone. Check this too.

**Answer this Question**

**Related Questions**

Math - An unusual die has six faces labelled 1,2,3,5,7 9. If two of these dice ...

math - A town of 1200 people has "fan-out" system for emergencies. In an ...

Math - If I have 4 people and I want to take a picture of them standing side by ...

Math - A phone tree is used to let committee members know that a meeting is ...

math - i have no clue how to do this problem. any help would be appreciated...

math - if a phone team asks each person to call two people, how many rounds will...

college - Four hundred people apply for three jobs. 130 of the applicants are ...

5th grade - If a phone team asks each person to call two people, how many rounds...

6th grade math - Can you check #18 and explain how to do #15 please? 15. Sue ...

Math - Four hundred people apply for three jobs. 130 of the applicants are women...