Show that `+ : R xx R ->R`and `xx : R xx R ->R`are commutative binary operations, but ` : RxxR ->R`and `-: : R_* xxR_* ->R_*`are not commutative.

Show that +: R xx R rarr R and xx : R xx R rarr R are commutative binary operations.

Show that +: R xx R rarr R and xx: R xx R rarr R are commutative binary operaions, but - : R xx R rarr R and -:: R_* xx R_* rarr R_* are not commutative.

Show that +: R xx R to R and × : R xx R to R are commutative binary operations , but - : R xx R to R and div : R _(**) xx R _(**) are not commutative.

Show that :- R xx RrarrR and div : R xx R rarrR are not commutative binary operations.

Show that +: R xx R to R and x : R xx R to R are communtative binary opertions , but - : R xx R to R and div : R _(**) xx R _(**) to R_(**) are not commutative.

Show that + : Rxx R rarr R and xx: R xxR rarr R are commutative binary operations, but -: Rxx R rarr R and divid: R^(**)xxR^(**)rarrR^(**) are not commutative.

Show that *: R xxR ->R defined by a*b = a +2b is not commutative.

Show that **: R xx to R defined by a **b=a + 2b is not commutative.