1
Solve
2 =
=
=
2
2
Solve
2 =
=
=
2
3
Solve
2 + =
=
=
2
4
Solve
2 + =
=
=
2
5
Solve
2 + + = 0
=
=
2
6
Solve
2 + + = 0
=
=
2
7
Solve
2 - = 0
=
=
2
8
Solve
2 + = 0
=
=
2
9
Find the roots of    2 -
=
=
1