Ask Question
5 February, 16:57

Z^2 + 9z - 90 = (z - 6) (z + )

Complete.

+1
Answers (1)
  1. 5 February, 17:14
    0
    (z - 6) (z + 15)

    Step-by-step explanation:

    Given

    z² + 9z - 90

    Consider the factors of the constant term ( - 90) which sum to give the coefficient of the z - term ( + 9)

    The factors are - 6 and + 15, since

    - 6 * 15 = - 90 and - 6 + 15 = + 9, hence

    z² + 9z - 90 = (z - 6) (z + 15)
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “Z^2 + 9z - 90 = (z - 6) (z + ) Complete. ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers