Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Algebra Identities
What is the value of a2 + b2 + c2 - 2ab - 2bc + 2ca ?
1
(2a + b + c)2
2
(a – b + c)2
3
(a – b – 2c)2
4
More than one of the above
5
None of the above