SOLUTION: Please help me Find the first four terms of the indicated expansions ( 2x^2 + y/3) ^15

Question 751785: Please help me
Find the first four terms of the indicated expansions
( 2x^2 + y/3) ^15
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Find the first four terms of the indicated expansions
( 2x^2 + y/3) ^15
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= 15C15(2x^2)^15+15C14(2x^2)^14(y/3)+15C13(2x^2)^13(y/3)^2+15C12(2x^2)^12(y/3)^3
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= 32768x^30 + 15*16384/3*x^28y + 105*8192/9*x^26y^2 + 455*4096/27*x^24y^3
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= 32768x^30 + 81920x^2y + 95573.33x^26y^2 + 60025.19x^2y^3
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Cheers,
Stan H.
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