(3x+2y+2z)(9x^(2)+4y^(2)+4z^(2)-6xy-4yz-6zx)

Find the product: (x+y+2z)(x^(2)+y^(2)+4z^(2)-xy-2yz-2zx)

Simplify: (x+y+2z)(x^(2)+y^(2)+4z^(2)-xy-2yz-2zx)

Find the following produts: (i) (x+y+2z)(x^(2)+y^(2)+4z^(2)-xy-2yz-2xz)(2x-y+2z)(4x^(2)+y^(2)+9z^(2)+2xy+3yz-6xz)

Find the following expressions (3x+2y+2z)(9x^2+4y^2-6xy-4yz-6zx)

Find the product: (4x-3y+2z)(16x^(2)+9y^(2)+4z^(2)+12xy+6yz-8zx)

Evaluate : (2x-y+3z)(4x^(2)+y^(2)+9z^(2)+2xy+3yz-6xz)

Find the product: (3x+2y+2z)\ \ (9x^2+4y^2+\ 4\ z^2-\ 6\ x y-4\ y z-6z x)

If x,y,z are real and 4x^(2) +9y^(2)+16z^(2) -6xy-12yz-8zx =0 then x,y,z are in