Question 7
Algebraic ExpressionsIf P = 18, Q = 21, R = −6 and S = −4, calculate ((P − Q)3 + S2)/R3
- A.−11/216
- B.11/216
- C.−43/116
- D.41/116
Show the answer and explanation
Answer: B (11/216)
Explanation
(18 − 21)³ = −27 and (−4)² = 16, so the top is −11. R³ = (−6)³ = −216, and −11/−216 = 11/216.