Can someone help me with this I need to get it done as soon as possible​

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

(01.02 lc) angle abc has point e on ray ba and point d on ray bc. points e and d are equidistant from point b. to bisect angle abc, which of the following needs to be identified for the construction? the distance between points e and d the point in the angle that is equidistant from points e and d the endpoint of rays ba and bc the point outside of the angle that is equidistant from points e and d

Which letters from the table represent like terms? a and b b and c a and d b and d