( (x-y)2-\(x^2+y^2\) ) का सरल रूप क्या है?
What is the simplified form of ( (x-y)2-\(x^2+y^2\) )?
Explanation opens after your attempt
B. (-2xy)
Concept
( (x-y)2=x-2-2xy+y-2 ), subtracting \(x^2+y^2\) gives (-2xy). Exam tip: watch the negative middle term.
Why this answer is correct
The correct answer is B. (-2xy). ( (x-y)2=x-2-2xy+y-2 ), subtracting \(x^2+y^2\) gives (-2xy). Exam tip: watch the negative middle term.
Exam Tip
( (x-y)2=x-2-2xy+y-2 ) से \(x^2+y^2\) घटाने पर (-2xy) मिलता है। परीक्षा में ऋणात्मक मध्य पद पर ध्यान दें।
Login to save your score, XP, coins and progress.
