Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

amin_alam_siddiqui

  • 2 years ago

i want to ask the cube of 3x-1/3y plzz answer this algebraic question with steps

  • This Question is Open
  1. punnus
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    There is an algebraic identity for such question. You want to cube of (3x-1/3y). Such type is identified by (a-b)^3. i.e \[a ^{3}-b ^{3}-3ab(a-b)\] Now put the value of a=3x and b=1/3y and solve it.

  2. amin_alam_siddiqui
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ACTUALLY THATS WHAT I CANNOT DO ALTHOUGH I KNOW THE IDENTITY PLZZ HELP ME WITH THE STEPS

  3. punnus
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    where do you get stuck

  4. amin_alam_siddiqui
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    FROM THE FIRST STEP

  5. punnus
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    see since a=3x and b=1/3y, first find the cube of both a and b i.e a^3=27x^3 and b^3=1/27y^3. Do you get it...

  6. amin_alam_siddiqui
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    WHAT DOES ^ THIS SIGN MEANS

  7. punnus
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    raise to power of

  8. amin_alam_siddiqui
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok yah am getting it then

  9. punnus
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    now calculate the value of 3a^2b i.e \[3\times(3x)^{2}\times(1/3y)\] Which is equal to \[9x ^{2}/y\]

  10. punnus
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    are you there

  11. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.