Ask questions and get helpful answers.

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. f ( x ) = 9 x 3 + 2 x 2 − 5 x + 4 and g ( x ) = 5 x 3 − 7 x + 4 . what is f ( x ) − g ( x ) ? Show all of your steps and write your final answer in factored form.

Please help me out! It would mean a lot :D

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩

13 answers

  1. haha @bobpursley I just realized it did it wrong. I'll fix it.

    f(x) = 9x^3 + 2x^2 - 5x +4
    g(x)= 5x^3 - 7x +4

    What is f(x)-g(x)?

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  2. @Mrs.Sue can you help me out?

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  3. f (x) - g (x) = 9 x³ + 2 x² - 5 x + 4 - ( 5 x³ - 7 x + 4 ) =

    9 x³ + 2 x² - 5 x + 4 - 5 x³ + 7 x - 4 =

    9 x³ - 5 x³ + 2 x² - 5 x + 7 x + 4 - 4 =

    4 x³ + 2 x² + 2 x =

    2 x ∙ ( 2 x² + x + 1 )

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  4. f ( x ) = 9 x 3 + 2 x 2 − 5 x + 4=27+4-5x+4 =35-5x
    g(x) = 5 x 3 − 7 x + 4 = 15-7x+4=19-7x
    those assume the x+4 at the end of each is not a factor (x+4). You did not use parenthesis.
    f(x)-g(x)= 35-5x-19+7x=16+2x
    This is so easy, wondering if you typed is correctly. Check.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  5. So f(x) - g(x) would simply be
    9x^3 + 2x^2 - 5x +4 - (5x^3 - 7x +4)
    = 4x^3 + 2x^2 + 2x

    This can be factored, but it was asked for.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  6. There are also no parenthesis.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  7. i need answers im gonna fail

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  8. dont tell people to shut up anonymous

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  9. and this is why people are failing cause nobody is giving good answers

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  10. p

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  11. Omg shut up no cheating that is why people come here dont be a party er. AND STOP BEING

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  12. explain dont give the answers

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  13. I don't know any Mrs. Sue. But this math is beyond ME.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩

Answer this Question

Related Questions

Still need help?

You can ask a new question or browse existing questions.