Question

formula of (x+y-z)^3​

Answer 1

Answer:

I think it might help you.

(x+y+z)3

=(x+y+z)(x+y+z)2

=(x+y+z)(x2+y2+z2+2xy+2yz+2xz)

=(x3+xy2+xz2+2x2y+2xyz+2x2z+x2y+y3+yz2+2xy2+2y2z+2xyz+x2z+y2z+z3+2xyz+2yz2+2xz2)

=x3+y3+z3+3xy2+3xz2+3x2y+3x2z+3y2z+3yz2+6xyz