Question

If a+1/a = 6 what is

1)a^2 +1/a^2

2)a-1/a

3) a^2-1/a^2

4)a^3 + 1/a^3

5)a^3 -1/a^3

6) a^4=1/a^4

7) a^4-1/a^4

Answer 1

1).

a²+1/a²=(a+1/a)²-2=36-2=34

2).(a-1/a)²=a²+1/a²-2=34-2=32

a-1/a=√32=4√2

hey asked single ....qiestion only