एक आयत मॉडल में (r+11) और (r-11) को साथ रखा गया है। दृश्य रूप से कौन-से रैखिक भाग कटेंगे?
In a rectangle model, (r+11) and (r-11) are placed together. Which linear parts cancel visually?
Explanation opens after your attempt
B. (11r) और (-11r)(11r) and (-11r)
Concept
Positive (11r) and negative (11r) cancel because their areas are equal. In exams, look for equal rectangles with opposite signs.
Why this answer is correct
The correct answer is B. (11r) और (-11r) / (11r) and (-11r). Positive (11r) and negative (11r) cancel because their areas are equal. In exams, look for equal rectangles with opposite signs.
Exam Tip
धनात्मक (11r) और ऋणात्मक (11r) बराबर क्षेत्रफल के कारण कटते हैं। परीक्षा में विपरीत चिन्ह वाले समान आयत देखें।
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