Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

Trending News

Promoted
Emma
Emma asked in Science & MathematicsMathematics · 4 months ago

What is this expression factored?

9k^2 - 90k + 216 

I got (3k-6)(3k-36) 

I need to get it in simplest form. Just divide it all by 3?

4 Answers

Relevance
  • ?
    Lv 7
    4 months ago
    Favorite Answer

    9(k^2 - 10k + 24)

    9(k - 6)(k - 4)

    Here’s a tip for you. If the number adds up to 9, it’s divisible by 9. 216 = 2 + 1 + 6 = 9 so it’s divisible by 9. 

  • Engr. Ronald
    Lv 7
    4 months ago

    9k^2 - 90k + 216

    = 9(k^2 - 10k + 24)

    = 9(k - 6)(k - 4) Answer//

  • Krishnamurthy
    Lv 7
    4 months ago

    9 k^2 - 90 k + 216

    = 9 (k - 4) (k - 6)

  • az_lender
    Lv 7
    4 months ago

    You've got it wrong, because (3k-6)(3k-36) = 9k^2 - 126k + 216.

    I would start by taking out a factor of 9.  I get

    9(k^2 - 10k + 24), then you can see it's

    9(k - 6)(k - 4).

    So YOUR expression should've been (3k - 18)(3k - 12).  But MY expression is the final answer.

Still have questions? Get your answers by asking now.