- A4 and 12
- B4 and 10
- C3 and 9
- D5 and 15
Step-by-Step Solution
Since 3 is a zero: 9 − 21 + k = 0 ⇒ k = 12. Sum of zeros = 7, so the other zero = 7 − 3 = 4.
Answer: A) 4 and 12
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Algebra practice questions