Find the value of `4 x^2+ y^2 +25 z^2+4xy-10yz-20zx` when `x=4;y=3 and z=2`

Find the value of 4x^(2)+y^(2)+25z^(2)+4xy-10yz-20zx when x=4,y=3 and z=2

Find the value of 4x^(2)+y^(2)+25z^(2)+4xy-10yz-20zx when x=4,y=3 and z=2

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 यदि x + y + z = 10, x^3+y^3+z^3=75 तथा xyz = 15 है, तो x^2+y^2+z^2 -xy-yz-zx का मान ज्ञात कीजिए।

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

25x^2+4y^2+9z^2-20xy-12yz+30xz

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

If x=997 , y=998 z=999 then the value of x^(2)+y^(2)+z^(2)-xy-yz-zx will be

If x^2 + y^2 + z^2 = xy + yz + zx , then the triangle is :