Question

what is the coefficient of the x^4y^3 term in the expansion of (x-2y)^7

Answer 1

Answer: -280

Step-by-step explanation: So (x-2y)^7 expanded is: x^7-14x^6y+84x^5y^2-280x^4y^3+560x^3y^4-672x^2y^5+448xy^6-128y^7. the x^4y^3 term would then be -280x^4y^3, meaning the coefficient (the number before the variables) here is -280 :)

Answer 2

Answer:

The answer for this problem is -280