`x+2y=5,2x+y=-2`

Write the numerical coefficient of each term of the following algebraic expressions: (i) x^2-7x^2y+5x y^2-2 (ii) -2a^3+7a b^2-6a b+8

The line 2x+3y=5 , 2x+y=k , 2x-y-1=0

Identify and write the like terms in each of the following groups : -2xy^2, x^2y, 5y^2x, x^2z

Add the algebraic expressions: 4x y^2-7x^2y ,\ 12 x^2y-6x y^2,\ -3x^2y+5x y^2

If the foci of a hyperbola lie on y=x and one of the asymptotes is y=2x , then the equation of the hyperbola, given that it passes through (3, 4), is x^2-y^2-5/2x y+5=0 2x^2-2y^2+5x y+5=0 2x^2+2y^2+5x y+10=0 none of these

If the planes x+2y+kz=5 and 2x +y-2z=0 are at right angles, then the value of k is

Multiply: (i) (2x^2y^2-5x y^2)b y\ (x^2-y^2) (ii) (x/7+(x^2)/2)b y\ (2/5+(9x)/4)

solve 3x - 2y + z = 1 2x + y- 5z = 2 x- y - 2z = 3.

The quadrilateral formed by the lines 2x-5y+7=0,5x+2y-1=0,2x-5y+2=0,5x+2y+3=0 is