Find the coefficient of y^4 in the expansion of (2y - 5 + y - 6)^4.
The coefficient of y4 in the expansion will be 81.
Combine terms of (2y – 5 + y – 6)4 to (3y – 11)4
There will be only one term raised to the fourth power
and that's the "3y" term ... 3 raised to the fourth is 81.
.
+1839 
