Question 11
Algebraic ExpressionsGiven that x = 2 and y = −1/4, evaluate (x2y − 2xy)/5
- A.0
- B.1/5
- C.1
- D.2
Show the answer and explanation
Answer: A (0)
Explanation
x2y = 4 × (−1/4) = −1 and 2xy = 2 × 2 × (−1/4) = −1. So (−1 − (−1))/5 = 0.
Given that x = 2 and y = −1/4, evaluate (x2y − 2xy)/5
Answer: A (0)
x2y = 4 × (−1/4) = −1 and 2xy = 2 × 2 × (−1/4) = −1. So (−1 − (−1))/5 = 0.