a³ + a² + a + 1........,............. please my answer
Share
a³ + a² + a + 1........,............. please my answer
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
HERE IS YOUR ANSWER
THIS IS A FORM OF GEOMETRIC MEAN
OF INFINITE SERIES, WHERE R < 1
FORMULAE IS : A/1—R
ATQ,
SERIES IS : A^3+A^2+A+1......
TAKING A^3 COMMON,
= (1+1/A+1 +1/A^2...)×A^3
APPLYING THE FORMULAE,
[1/(1—1/A)]×A^3
=A^4/(A—1)
HENCE DONE
CHEERS
MARK BRAINLIEST ⭐