Verified Answer :

1 (2x)^5 + 5(2x)^4 (-3)^1 + 10(2x)^3 (-3)^2 + 10(2x)^2 (-3)^3 + 5(2x)^1 (-3)^4 + 1 (-3)^5

the third term would then be 720*x^3
I hope i helped you :D

i hope this helps you

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