`x/y . y/(xz) . z^2 /(xy)`

If x = 2+ sqrt3, y = 2- sqrt3 and z = 1, then what is the value of (x//yz) + (y//xz) + (z//xy) + 2[(1//x)+ (1//y) + (1//z)] ?

xquad x ^ (2), y2yquad y ^ (2), 2xz, z ^ (2), xy] | = (xy) (yz) (zx) (xy + yz + 2x)

If f(x,y,z) = sin (xy) + cos(xz) , then f_("xx") is

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

What is the LCM of (x^2 - y^2 – z^2 – 2yz),(x^2 - y^2 + z^2 + 2xz) and (x^2 + y^2 - z^2 - 2xy) ?

tan ^ (- 1) ((sqrt (x (x + y + z))) / (yz)) + tan ^ (- 1) sqrt ((y (x + y + z)) / (xz)) + tan ^ (- 1) (sqrt ((z (x + y + z)) / (xy))) = pi

Factorise 4x^(2) + y^(2) + z^(2) - 4xy - 2yz + 4xz .

Factorise : 4x^(2) + 9y^(2) + 16z^(2) +12xy - 24yz - 16xz