यदि दो वर्गों की भुजाएँ (x+k) और (x-k) हों, तो उनके क्षेत्रफल मॉडलों का अंतर किसके बराबर होगा?
If two squares have sides (x+k) and (x-k), what will the difference of their area models be?
Explanation opens after your attempt
A. (4kx)
Concept
The difference of expansions is (x-2+2kx+k-2-\(x^2-2kx+k^2\)=4kx). In exams, cancel equal square terms.
Why this answer is correct
The correct answer is A. (4kx). The difference of expansions is (x-2+2kx+k-2-\(x^2-2kx+k^2\)=4kx). In exams, cancel equal square terms.
Exam Tip
विस्तारों का अंतर (x-2+2kx+k-2-\(x^2-2kx+k^2\)=4kx) है। परीक्षा में समान वर्ग पद काटें।
Login to save your score, XP, coins and progress.
