SOLUTION: Find the coefficient of y^4 in the expansion of (2y - 5)*(5y - 2)^6.
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Question 1204812: Find the coefficient of y^4 in the expansion of (2y - 5)*(5y - 2)^6.
Found 2 solutions by MathLover1, ikleyn:
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
....expand
=
=
the coefficient of is:
Answer by ikleyn(52847) (Show Source): You can put this solution on YOUR website!
.
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