(-2x+3y+2z)

Using matrices solve .the following system of linear equations : 2x -3y + z = 2, 3x -2y. + 3z= 2, x -y-4z =-4

If x : y : z = 3 : 4 : 9, then what will be the value of (2x + 3y + z) : (2z + x – 3y)?

Solve the following equations, using inverse of a matrix : {:(5x-y+z=4),(3x+2y-5z=2),(x+3y-2z=5):}

If (2x-y)^(2)+(3y-z)^(2)=0 then x:y:z is

If x+y+z=1, then 1-3x^(2)-3y^(2)-3z^(2)+2x^(3)+2y^(3)+2z^(3) is equal to

Write the numerical coefficient of each of the following: 7abc( ii) -2x^(3)y^(2)z

Solve by matrix method. 1/x+2/y-3/z=-4 2/x+3/y+2/z=2 3/x-1/y-4/z=11