<PRE><B>Question 935353</B>
How do you: 
Find the coefficient of x^4 in the binomial expansion of (5+2x)^7 = (2x+5)^7 
----
x^4 appears in the 4th term
Form of the 4th term:: 7C4(2x)^4*5^3
---------------------------------
Coefficient:: 7C4 = 35
------
Expansion of 1st term:: (2x)^4 = 16x^4
Expansion of 2nd term:: (5)^3 = 125
-------
4th term:: 35*16x^4*125 = 70,000x^4
-----------
Cheers,
Stan H.


</PRE>