Ask Question
23 April, 06:33

X^2-x-20 how do I write that in factored form

+2
Answers (2)
  1. 23 April, 07:22
    0
    (x - 5) (x + 4)

    Step-by-step explanation:

    When solving quadratic equations it's important to remember that they have 2 solution. We need to work out the factors, sum and the products to successfully factorise the quadratic and solve it. So,

    x² - x - 20 = 0

    Sum = - 1

    Product = - 20

    So we need two numbers that sum to - 1 and multiply together to make - 20

    Factors = - 5 and 4

    x² - 5x + 4x - 20

    Factor x² - 5x and 4x - 20 separately

    x² - 5x = x (x - 5)

    4x - 20 = 4 (x - 5) So

    x (x - 5) + 4 (x - 5)

    We can see a common factor of (x - 5) and the other bracket would be (x + 4)

    (x - 5) (x + 4)
  2. 23 April, 08:59
    0
    (x+4) (x-5)

    Step-by-step explanation:

    You need to find two numbers that multiply to be - 20 but add up to be - 1.
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “X^2-x-20 how do I write that in factored form ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers