If ` [[x-y,2x-x_1],[2x-y,3x+y_1]], =[[-1,5],[0,13]]` and coordinats of points P and Q be (x,y) and `(x_1,y_1)` respectively then P,Q=?

If [[xy, 2x-x_ (1) 2x-y, 3x + y_ (1)]] = [[- 1,50,13]]

If [[x-y, 2x+z],[2x-y,3z+omega]] =[[-1,5],[0,13]] find x,y,z,omega

If O is the origin and if the coordinates of any two points Q_(1) and Q_(2) are (x_(1),y_(1)) and (x_(2),y_(2)), respectively,prove that OQ_(1).OQ_(2)cos/_Q_(1)OQ_(2)=x_(1)x_(2)+y_(1)y_(2)

Find the distance between points P(x_1, y_1) and Q(x_2, y_2) : PQ is parallel to x-axis

Find the distance between points P(x_1, y_1) and Q(x_2, y_2) : PQ is parallel to y-axis

The point of injtersection of the line x/p+y/q=1 and x/q+y/p=1 lies on the line

C is the mid-point of PQ, if P is (4, x), C is (y, -1) and Q is (-2, 4), then x and y respectively are

Find x, y, z when [(x-y,2x+z),(2x-y,3z+w):}]=[{:(-1,5),(0,13):}].