ITSDDGO ITSDDGO Mathematics Answered (p^-1 Q^3 R^-5 2^2)^2/ P^3 Q^7 R^-5 S^-4 a. P^4 Q^2 R^4 S^6 b. S^8/P^5 Q^1 R^5 c. P^3 Q^6 R^1 S^9 d. P^2 S^4/Q^5 R^10