Multiply the following:
`x^(2)+y^(2)+z^(2)` and `xy-yz+zx+3`

Multiply the x ^(2) y ^(2) z ^(2) , (x y - yz + zx)

If x^(2)+y^(2)+z^(2)=1 then xy+yz+zx lies in

x+y-z=5 and x^(2)+y^(2)+z^(2)=29, find xy-yz-zx

find the value of x+y+z if x^(2)+y^(2)+z^(2)=18 and xy+yz+zx=9 .

If x + y + z = 10, x ^(3) + y ^(3) + z ^(3) = 75 and xyz = 15, then find the value of x ^(2) + y ^(2) + z ^(2) - xy - yz - zx

Multiply: x^(2)+y^(2)+z^(2)-xy+xz+yz by x+y-2

If x = 6, y = 4 and z = 3, then find the value of x ^(2) + y ^(2) + z ^(2) - 2xy + 2 yz - 2 zx.

Multiply: x^(2)+4y^(2)+z^(2)+2xy+xz-2yz by x-2y-z