(3m+7) और (3m-7) से बने आयत के मॉडल में कौन-सा पद नहीं रहेगा?
In the rectangle model formed by (3m+7) and (3m-7), which term will not remain?
Explanation opens after your attempt
C. ( 21m )
Concept
(21m) and (-21m) cancel each other. In exams, check opposite signs of equal linear terms.
Why this answer is correct
The correct answer is C. ( 21m ). (21m) and (-21m) cancel each other. In exams, check opposite signs of equal linear terms.
Exam Tip
(21m) और (-21m) आपस में कट जाते हैं। परीक्षा में समान रैखिक पदों के विपरीत चिन्ह देखें।
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