Practice30Create account

If one zero of the polynomial is 3, then the other zero and the value of are:

Competition practiceAlgebra
  • 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

Master this topic in 30 minutes a day.

Don't just memorise the answer — build a daily practice habit.

Practice 5 Similar Questions Free →

All Algebra practice questions

More Algebra practice

A quadratic polynomial whose zeros are −3 and 5 is:For what value of k does the pair of equations 2x + 3y = 7 and (k − 1)x + 6y = 14 have…The equation 4x² − kx + 9 = 0 has two equal real roots. The positive value of k is:If the nth term of an AP is given by aₙ = 5n − 3, then the sum of its first 10 terms is:Use a² − b² to evaluate (87)^2 - (13)^2/74.