# Fasssssssssssssssssst! What is a-b-c whole square?

2
by Deleted account
(a-b-c) to the power of 2.
a^2+b^2+c^2-2ab+2bc-2ca
Yeah you're right.
ya

2015-07-12T10:52:53+05:30

### This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
We know that (a+b+c)^2=a^2+b^2+c^2+2ab+2bc+2ca                                                              (a-b-c)^2=a^2+(-b)^2+(-c)^2+2(a)(-b)+2(-b)(-c)+2(-c)(a)
=a^2+b^2+c^2-2ab+2bc-2ca

Thanks a lot.
My friend actually argued with me that it's a^2+b^2+c^2-2ab-2bc-2ca
How to mark as brainliest?
you will get a notification to mark it as brainliest
2015-07-12T10:54:24+05:30

### This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
a^2+b^2+c^2-2ab+2bc-2ca

okthanks
not required
Yeah it's too correct.