Tommy and Sally are arguing over the meanings of x^4 and x^-4. Tommy argues that x^4 is the reciprocal of x^-4. Sally insists that x^-4 is the reciprocal of x^4. Who is correct?
A. Tommy is correct.
B. Sally is correct.
C. Both Tommy and Sally are correct.
D. Neither Tommy nor Sally is correct.

Question

Tommy and Sally are arguing over the meanings of x^4 and x^-4. Tommy argues that x^4 is the reciprocal of x^-4. Sally insists that x^-4 is the reciprocal of x^4. Who is correct?
A. Tommy is correct.
B. Sally is correct.
C. Both Tommy and Sally are correct.
D. Neither Tommy nor Sally is correct.

anonymous · Answer

x^4 and x^(-4) are reciprocals of each other.

Note: Two numbers are the reciprocals of each other if their product is 1.

(x^4) (x^(-4)) = x^0 = 1.

@loudestlucid