Question

Find the coefficient of x^16 in the expansion of (2x^2-x)^10​

Answer 1

(a - b)^10  =  a^10 - 10a^9b + 45a^8b^2 - 120a^7b^3 + 210a^6b^4 - 252a^5b^5 + 210a^4b^6 - 120a^3b^7 + 45a^2b^8 - 10ab^9 + b^10

This is the formula for that, so enjoy and solve yourself because it's quite lengththy :D