(-x-3)^4
6505*756
8+6÷2
8+6÷3
52 x 76=
24×28
÷
5/x^2=5x=4-x-1/x^2=3x-4=5/x^2-1
8+6/3
If R is a ring with unity and characteristic n>1, then R contains a subring isomorphic to Zn.If R has characteristic zero then R c...