Date: Thu, 10 Sep 1998 18:29:31 -0600 (CST)
Who is asking: Student
These questions deal with factoring.
(1+z+z^2)^2 and (p^2-pq+q^2)^2
I partially understand the second line which would be 1+z^2+z^4+2z+2z^2+2z^3 but I don't understand where the 2 comes from in the second half of that line.
p.s.(^2 means squared or cubed etc.)
Please help me out A.S.A.P.!
I have a quiz on this tomorrow!
To expand (1+z+z^2)^2 think of (1+z+z^2)(1+z+z^2).
I hope this helps,
- First multiply the 1 in the first factor times the second factor to get
- Second multiply the z in the first factor times the second factor to get
- Third multiply the z^2 in the first factor times the second factor to get
- Finally add the results of the 3 previous steps to get
Go to Math Central
To return to the previous page use your browser's back button.