Rs aggarwal solutions Our top 5% students will be awarded a special scholarship to Lido.
Set your child up for success with Lido, book a class today!

8𝑥^3 −1/27𝑦^3

• Solution

• Transcript

8𝑥^3 −1/27𝑦^3

According to the equation,

𝑎^3 − 𝑏^3 = (𝑎 − 𝑏)(𝑎^2 + 𝑎𝑏 + 𝑏^2)

So we get,

8𝑥^3 −1/27𝑦^3

= (2𝑥)^3 − (1/3𝑦)^3

Based on the formula,

= (2𝑥 −1/3𝑦)((2𝑥)^2 + (2𝑥)(1/3𝑦) + (1/3𝑦)^2)

= (2𝑥 −1/3𝑦)(4𝑥^2 +2𝑥/3𝑦+1/9𝑦^2)

"hello guys welcome back to the homework i'm ravind kumar working as a tutor at leader so today we are going to solve and explore one more very easy and interesting question so let's see and now we can solve it okay so that is they have given here it has 8 x cube minus 1 by 27 y cube so that it can be written in the format of 2 x whole cube minus 1 by 3 y whole cube also right so that is equals to again in the format of a minus a cube minus b cube so that is a minus b of a square plus a b plus b squared so that is the thing here so we can solve it 2 x minus 1 by 3 y off so that is a square so that is of 4 x squared plus and here a b right 2 x multiplied by 1 by 3 y plus 1 by 9 y squared so that you will be getting the final answer is 2 x minus 1 by 3 by off of 4 x square plus here you will be getting 2 x by 3 2 x by 3 y plus one by nine y square so that is the thing here so i hope you understand what i've done and video if you have any doubts please comment below don't forget to subscribe to this channel thank you so much for watching this stay tuned thank you "

Our top 5% students will be awarded a special scholarship to Lido. Lido

Courses

Teachers

Book a Demo with us

Syllabus

Science
English
Coding

Terms & Policies

NCERT Question Bank

Maths
Science

Selina Question Bank

Maths
Physics
Biology

Allied Question Bank

Chemistry