एक वर्गाकार मॉडल में क्षेत्रफल \(16p^2-40pq+25q^2\) है। यह किस भुजा वाले वर्ग को दिखाता है?
A square model has area \(16p^2-40pq+25q^2\). It represents a square with which side?
Explanation opens after your attempt
C. (4p-5q)
Concept
Here (16p-2=(4p)2) and (25q-2=(5q)2), and the middle term is negative. Exam tip: check both signs and square roots.
Why this answer is correct
The correct answer is C. (4p-5q). Here (16p-2=(4p)2) and (25q-2=(5q)2), and the middle term is negative. Exam tip: check both signs and square roots.
Exam Tip
(16p-2=(4p)2) और (25q-2=(5q)2) हैं तथा मध्य पद ऋण है। परीक्षा में संकेत और वर्गमूल दोनों जांचें।
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