JAMB Mathematics 2023 Objective — Question 23
Question 23 of 40 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2023 Objective paper, with the correct answer and a full explanation.
Advertisement
Solve the inequality x²+2x > 15.
- A. x>3 or x<-5Correct
- B. x<-3 or x>5
- C. -5<x<3
- D. x<3 or x>3
Explanation
x²+2x-15>0 ⇒ (x-3)(x+5)>0 ⇒ x>3 or x<-5.
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.