Question

the coefficient of x^3y^3 in the expansion of (2x-y)^6 is?

Answer 1

(2x)^6+6((2x)^5*(-y))+15((2x)^4*(-y)^2))+20((2x)^3*(-y)^3)+15((2x)^2*(-y)^4)+6((2x)*(-y)^5))+(-y)^6
coefficient of x^3y^3 is 160

Answer 2

I used pascal triangle

Answer 3

the answer provided is given -160

Answer 4

yes its -160

Answer 5

because (-y)^3 gives a negative value
(-y)^3*(2x)^3*20=-160x^3y^3 try it out

Answer 6

yaa i got it thanks :)

Answer 7

your welcome