Which of the following is an identity?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. (a + b)2 = a2 + b2 + 2ab.
Only option 2 is an identity
(a + b)2= a2 + b2 + 2ab
and
(a - b)2= a2 + b2 - 2ab
SSC CHSL 2023 PYQ — Question 64
SSC CHSL 2023 - 04 Aug 2023 - Shift 2 • Quantitative Aptitude • Q64