ParthKohli
  • ParthKohli
Given the following statements: \( 2x + 3y =12 \) \( xy = 6\) What is \(8x^3 + 27y^3\)?
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
lgbasallote
  • lgbasallote
\[(8x^3 + 27y^3) \implies (2x +3y)(4x^2 + 6(xy) + 9y^2\] does that give you a hint
anonymous
  • anonymous
\[a^3 + b^3 = (a + b)(a^2 + b^2 - ab)\]
ParthKohli
  • ParthKohli
Ah! Gotcha!

Looking for something else?

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

More answers

apoorvk
  • apoorvk
\[8x^3 + 27y^3 = (2x)^3 + (3y)^3\] Use the funda below: \[(a)^3+(b)^3 = (a+b)(a^2-ab +b^2)\]
lgbasallote
  • lgbasallote
\[\implies (2x+3y)[(2x + 3y)^2 - 6(xy)]\] \[\implies (12)[(12)^2 - 6(6)]\] \[\implies (12)[144 - 36]\] etc.
ParthKohli
  • ParthKohli
Yep. Thanks!
mathslover
  • mathslover
@ParthKohli may i give you an advise?
ParthKohli
  • ParthKohli
Yes, please :)
mathslover
  • mathslover
dude this is in class IX maths 2nd chapter try to do problems also from entrancei.com or from ncert exempler problems usually this advice is not given by any teacher ( some are exceptional ) but i am giving you since talent needs guidance :)
ParthKohli
  • ParthKohli
Let me try to watch some videos related to this topic so I could brush-up my skills. Thanks!
mathslover
  • mathslover
Yes that is a better way @ParthKohli but videos are ok for you as you are in a lower age for this level that is you are doing higher but remember : when you come in 9th dont prefer videos since videos make the student dependent .. :) best of luck dude .. and thanks for taking that as positive
ParthKohli
  • ParthKohli
I disagree: Videos are pretty dynamic and visual.
mathslover
  • mathslover
friend ... they are dynamic and visual , they can be used for at the last days of exams .. to just revise withing minutes but my main point was that "dont' dedicate yourself completely on videos .. but since you are at present doing higher .. prefer videos first :) "
ParthKohli
  • ParthKohli
I see. I do know polynomials, but I don't know how to do these kinds of problems. Let me see.
mathslover
  • mathslover
being disagreed has the reason since at this time videos are helping you very much ... for higher level .. .
ParthKohli
  • ParthKohli
I use http://tutorial.math.lamar.edu, but it doesn't have such practice problems.
mathslover
  • mathslover
for practice problems prefer this link : http://www.ncert.nic.in/NCERTS/textbook/textbook.htm?ieep2=2-17
mathslover
  • mathslover
main concepts .. then problems
ParthKohli
  • ParthKohli
I actually do know all these identities, but sometimes it becomes a pain-in-the-brain to apply them.
mathslover
  • mathslover
Hmn yes it becomes .. see whenever you are given with that type of questions and you know that is something related to this topic then : try to make it similar to the identities

Looking for something else?

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