" (3) "[4x-3y=2],[3x-2y=7]

3x-4y=-7,5x-2y=0

3x+2y=5 2x-3y=7

3x+2y=5 2x+3y=7

3x-y=7; 2x+4y=0

Simplify: (3x+2y)(4x+3y)-(2x-y)(7x-3y)

If |(3x+4y,-3),(2,x+2y)|=|(7,-3),(2,3)| then x and y are

Classify the following pairs of lines as coincident, parallel, perpendicular or intersecting : (i) 6x+14y-16=0 , 12x+28y-32=0 (ii) 3x-4y=8 , 3x+4y=11 (iii) 5x-2y=7 , 2y-5x=-7 (iv) 4x+7y=19 , 7x-4y=-2 (v) x-2y=7 , 4y-2x=13

Simplify: (3x+2y)(4x+3y)-\ (2x-y)(7x-3y)

Solve the following system of equations by matrix method : 5x+7y+2=0 4x+6y+3=0 5x+2y=3 3x+2y=5 3x+4y-5=0 x-y+3=0 3x+y=19 3x-y=23 3x+7y=4 x+2y=-1 3x+y=7 5x+3y=12

If [2x+y,4x,5x-7 4x]=[7 7y-13 y x+6] , then the value of x+y is x=3 , y=1 (b) x=2 , y=3 (c) x=2 , y=4 (d) x=3 , y=3