JSCE Mathematics 2023 Objective — Question 51
Question 51 of 80 from the Junior Secondary Certificate Examination (JSCE) Mathematics 2023 Objective paper, with the correct answer and a full explanation.
Advertisement
The coefficient of x in the expansion of (x + 3)(x − 5) is ...
- A. -15
- B. -2Correct
- C. 1
- D. 15
Explanation
(x + 3)(x − 5) = x² − 5x + 3x − 15 = x² − 2x − 15. Coefficient of x = −2.
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.