Subtract 3xy + 5yz – 7zx from 5xy – 2yz – 2zx + 10xyz

Subtract 4xy + 7x^(2) from 6xy + x^(2) - 5y^(2)

Subtract 2xy + 9x^2 from 12xy + 4x^2 - 3y^2 .

Subtract the following - 2/7 from 3/5

The two planes represented by 12 x ^(2) - 2y ^(2) - 6z^(2) - 7 yz + 6zx - 2 xy =0 are

If x,y, z are real numbers satisfying the equation 25(9x^(2) + y^(2)) + 9z^(2)- 15 (5xy + yz + 3zx)= 0 then x,y, z are in

The angle between the planes represented by 2x ^(2) - 6y ^(2) - 12 z^(2) + 18 yz + 2 zx + xy =0 is

Subtract the first term from second term: 2xy, 7xy

Factorise 4x^2 + 9y^2 + 25z^2- 12xy-30yz + 20zx .

If the sides of a triangle are xy + yz , yz +zx , zx+ xy then inradius of the triangles is