What is the value of `(-1)^(-1)?`

(2)/(p)-(1)/(2p)=(p^(2)+1)/(p^(2)+1) In the equation above, what is the value of (1)/(p) ?

If 2w-1=2, what is the value of w^(2)-1 ?

If (2rs)^(-1)=3s^(-2) , what is the value of (r)/(s) ?

If (x-1)^3=8, what is the value of (x+1)^2\ ?

If (sqrtx)^(y)=5 , what is the value of (1)/(x^(2y)) ?

What is the value of ((1)/(2)+isqrt(5))((1)/(2)-isqrt(5)) ?

If x = -5, what is the value of ((x^2 -1)/(x+1)) ?

1.What is the value of tan[(1)/(2)cos^(-1)((3)/(5))]+tan[(1)/(2)cos^(-1)((4)/(5))] ?

What is the value of tan[(1)/(2)cos^(-1)((3)/(5))]+tan[(1)/(2)cos^(-1)((4)/(5))]? (a) (5)/(6) (b) (-5)/(6) (c) (1)/(2) (d) 0

If (a-4)/(28)=(1)/(4) , what is the value of a?