Ask Question
2 October, 12:33

Write the factors of the quadratic equation: x^2 - 4x-21=0

+1
Answers (1)
  1. 2 October, 15:52
    0
    (x - 7) (x + 3) = 0

    Step-by-step explanation:

    To factorise the quadratic

    Consider the factors of the constant term ( - 21) which sum to give the coefficient of the x - term ( - 4)

    The factors are - 7 and + 3, since

    - 7 * 3 = - 21 and - 7 + 3 = - 4, thus

    (x - 7) (x + 3) = 0 ← in factored form
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Write the factors of the quadratic equation: x^2 - 4x-21=0 ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers