0 reads0 ratings0 helpful
What is the simplified form of ( (x+y)^2-(x-y)^2+ (x+2y)^2-(x-2y)^2 )?( (x+y)^2-(x-y)^2+ (x+2y)^2-(x-2y)^2 ) का सरल रूप क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: \(12xy\)\(12xy\)
For the first part, \((x+y)^2-(x-y)^2=4xy\). Similarly, \((x+2y)^2-(x-2y)^2=8xy\). Therefore, the total is \(4xy+8xy=12xy\). It is not \(16xy\), because the two differences add up to 12. Exam tip: apply the identity \((a+b)^2-(a-b)^2=4ab\) directly.पहले भाग में \((x+y)^2-(x-y)^2=4xy\) होता है। इसी प्रकार \((x+2y)^2-(x-2y)^2=8xy\) होता है। अतः कुल मान \(4xy+8xy=12xy\) है। \(16xy\) तब नहीं मिलेगा, क्योंकि दोनों अंतरों का योग 12 है। परीक्षा टिप: \((a+b)^2-(a-b)^2=4ab\) पहचान का सीधे प्रयोग करें।
Student feedback
Was this question useful?
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Difficulty
Easy0%
Medium0%
Hard0%
Was the explanation clear?
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
