Join now for JEE/NEET and also prepare for Boards Class 10 Boards Cancelled! What to do next ? Ask our Experts in a Free Counseling Session Now ! Register Now
Hey there! We receieved your request
Stay Tuned as we are going to contact you within 1 Hour
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
Sit and relax as our customer representative will contact you within 1 business day
if x=a+b,y=aω+bω2,z=aω2+bω, then find the value of xyz ?
Dear Mahima,
As you know that 'w' is the cube root of unity:
so w3 = 1 & w2+w + 1 = 0;
so
(a+b)(aw+bw2)(aw2+bw)
= w2 (a+b)(a+bw)(aw+b)
=(a+b)(a+bw)(aw3+bw2)
=(a+b)(a+bw)(a+bw2) =a3+b3
Thus your required answer is : " a3+b3 "
askIITians.com provides online iit jee courses and IIT JEE Test Series with IITians. Click here to get free online test series and check your status timely or you can join us as our registered user for getting best iit jee study material or iit jee test series.
Click here to find IIT JEE Packages or course details with askIITians.
for further details visit the folowing links:
http://www.askiitians.com//iit-jee-online-coaching.aspx
http://www.askiitians.com/iit-jee-test-series.aspx
http://www.askiitians.com/iit-study-material/
Askiitians provide you all the best possible information, feel free to ask.
all the best.
thanks and regards.
Akhilesh Shukla
Get your questions answered by the expert for free
You will get reply from our expert in sometime.
We will notify you when Our expert answers your question. To View your Question
Win Gift vouchers upto Rs 500/-
Register Yourself for a FREE Demo Class by Top IITians & Medical Experts Today !