WAEC Mathematics 2023 Objective — Question 39
Question 39 of 50 from the West African Examinations Council (WAEC) Mathematics 2023 Objective paper, with the correct answer and a full explanation.
Advertisement
If 2x-3y=-11 and 3x+2y=3, evaluate (y-x)².
- A. 4
- B. 9
- C. 16Correct
- D. 4
Explanation
Solving simultaneously: from 2x-3y=-11 and 3x+2y=3, we get x=-1, y=3. (y-x)²=(3-(-1))²=4²=16.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.