SOLUTION: Find the coefficient a of the given term in the expansion of the binomial. Binomial (3x − y)^12 Term ax^4y^8

Algebra ->  Trigonometry-basics -> SOLUTION: Find the coefficient a of the given term in the expansion of the binomial. Binomial (3x − y)^12 Term ax^4y^8       Log On


   

Question 1179416: Find the coefficient a of the given term in the expansion of the binomial.

Binomial
(3x − y)^12
Term
ax^4y^8
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

Binomial
%283x+-y%29%5E12
we need this term: ax%5E4y%5E8

%2812C8%29%283x%29%5E%2812-8%29%2Ay%5E8
=%2812C8%29%283x%29%5E%2812-8%29%2Ay%5E8
=495%283x%29%5E4%2Ay%5E8
=495%2A3%5E4%2Ax%5E4%2Ay%5E8
=40095x%5E4%2Ay%5E8