एक (n+4) और (n-4) आयत का दृश्य मॉडल बनाया गया। कौन-से भाग कट जाते हैं?
A visual model of a rectangle (n+4) by (n-4) is made. Which parts cancel?
Explanation opens after your attempt
B. ( 4n ) और (-4n)( 4n ) and (-4n)
Concept
One (4n) positive part and one (-4n) negative part cancel. In exams, identify equal terms with opposite signs.
Why this answer is correct
The correct answer is B. ( 4n ) और (-4n) / ( 4n ) and (-4n). One (4n) positive part and one (-4n) negative part cancel. In exams, identify equal terms with opposite signs.
Exam Tip
एक (4n) धनात्मक और एक (-4n) ऋणात्मक भाग बराबर होकर कटते हैं। परीक्षा में विपरीत चिन्ह वाले समान पद पहचानें।
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