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Problem of the week #11 - June 11th, 2012

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Jameson

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Jan 26, 2012
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Jameson

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Jan 26, 2012
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Congratulations to the following members for their correct solutions:

1) Sudharaka
2) veronica1999
3) soroban

Solution (from soroban):

[tex]{7\choose4,3}(3x)^4(-2y)^3 \;=\;35(81x^4)(-8y^3) \;=\;-22,680x^4y^3 [/tex]

The coefficient is:[tex]\, \,-22,680.[/tex]
 
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