( (3x+1)2-\(9x^2+1\) ) को सरल कीजिए।
Simplify ( (3x+1)2-\(9x^2+1\) ).
Explanation opens after your attempt
B. (6x)
Concept
( (3x+1)2=9x-2+6x+1 ). Exam tip: subtract like terms after expansion.
Why this answer is correct
The correct answer is B. (6x). ( (3x+1)2=9x-2+6x+1 ). Exam tip: subtract like terms after expansion.
Exam Tip
( (3x+1)2=9x-2+6x+1 ) है। परीक्षा में वर्ग के बाद समान पद घटाएँ।
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