The coefficient of x2 in the expansion of (x + 3)^4 is
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Answered by
7
Step-by-step explanation:
The coefficient of x² is -6.
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Answered by
1
Thanks for your question...
Your required answer :
Given :
- ( x + 3 )⁴
- ( x + 3 )² ( x + 3 ) ²
- ( x² + 9 + 6x ) ( x² + 9 + 6x )
- x⁴ + 9x² + 6x³ + 9x² + 81 + 54x + 6x³ + 54x + 36x²
- x⁴ + 6x³ + 6x³ + 9x² + 9x² + 36x² + 54x + 54x + 81
- x⁴ + 12x³ + 54x² + 108x + 81
Therefore coefficient of x² is 54 .
Brainliest Please
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