Which of the following represents (x + y)2?
निम्नलिखित में से कौन-सा (x + y)2 को निरूपित करता है?
Answer और ExplanationAnswer and explanation
Answer: (B) x2 + 2xy + y2
(x + y)2 = (x + y)(x + y) = x2 + xy + xy + y2
= x2 + 2xy + y2
✓
उत्तर x2 + 2xy + y2 है।
(x + y)2 = (x + y)(x + y) = x2 + xy + xy + y2
= x2 + 2xy + y2
✓
The answer is x2 + 2xy + y2.
SMART APPROACH
x = 2, y = 1 रखें: (x + y)2 = 9। विकल्पों से 5, 9, 1 और 3 मिलते हैं, इसलिए उत्तर x2 + 2xy + y2 है।
Put x = 2, y = 1: (x + y)2 = 9. The options give 5, 9, 1 and 3, so the answer is x2 + 2xy + y2.
Source: Selection Post Phase XIV (Graduate) · 23 Sep 2026 · Shift 1। Solution: Prashant Sir, Vijayastra।Source: Selection Post Phase XIV (Graduate) · 23 Sep 2026 · Shift 1. Solution by Prashant Sir, from Vijayastra.