Find the Coefficient a of the Term in the Expansion $( x + 7 ) ^ { 12 } a x ^ { 5 }$

question 66

Multiple Choice

Find the coefficient a of the term in the expansion of the binomial.​ Binominal Terms
$( x + 7 ) ^ { 12 } a x ^ { 5 }$ ​

• A)-407,653,785
• B)-652,246,056
• C)760,953,732
• D)181,179,460
• E)652,246,056

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