# math

posted by .

if foreach a and b is group G,(ab)2 =a2b2 ,show that G is abelian

• math -

(ab)^2 = abab
If abab = aabb then the middle ba = ab

## Similar Questions

1. ### Chemistry

Which of the following does form a Group II cation?
2. ### MATH

IM CLUELESS PLEASE EXPLAIN IM GONNA TAKE A TEST THANK YOU 3A2B+2A2B2AND-AB2+A2B2?
3. ### Vectors & Geometry

Let A= Ai I + A2 J + A3 K and B= Bi I + B2 J + B3 K, prove that A.B = AiBi + A2B2 + A3B3
4. ### math

There are 6 boys and 8 girls in a group of students. Calculate the number of ways that a committee of 3 students which has at least 1 girl can be selected from the group. Please show your work.
5. ### math

Show that Sn is non-abelian for n>=3
6. ### Psychology

why is it wrong for a researcher to assign the first subjects to show up for an experiment group and the second group of subjects to arrive to the control group?
7. ### child care management

According to leeds,at snack time,children sould be given _ of each food foreach yea of theie lives.
8. ### Stor 155

In computing the median income of any group, some federal agencies omit all members of the group who had no income. Give an example to show that the reported median income of a group can go down even though the group becomes economically …
9. ### maths

let G be a group with operation . and let p,q be two elements of G. simplify p.q.q.q^-1.p^-1.q^-1 as much as possible.does answer change if G is ABELIAN?
10. ### math

Group 1 Group 2 Group 3 1/3 / 9 12 / 1/6 5/6 / 1/2 1/6 / 12 5 / 2/3 3/4 / 3/4 3/5 / 6 3 / 2/5 9/5 / 1/2 Group 4 5 / 1 1/2 1/2 / 3 2/3 3 1/3 / 2/3 1 Describe what the problems in each group have in common.

More Similar Questions