Respuesta :

LammettHash
The answer depends on what is meant by the "fourth term". By the binomial theorem, one answer could be

[tex]\dbinom{10}3e^3(2f)^{10-3}=120e^3(2f)^7=15360e^3f^7[/tex]

By symmetry, another could be

[tex]\dbinom{10}3(2f)^3e^{10-3}=960e^7f^3[/tex]

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