" (ii) "[5-3x+2y-(2x-y)]-(3x-7y+9)

Simplify: [5-3x+2y-(2x-y)]-(3x-7y+9)

Simplify: [5-3x+2y-(2x-y)]-(3x-7y+9)

Simplify : (i) (5x - 9y) - (-7x + y) (ii) (x^(2) -x) -(1)/(2)(x - 3 + 3x^(2)) (iii) [7 - 2x + 5y - (x -y)]-(5x + 3y -7) (iv) ((1)/(3)y^(2) - (4)/(7)y + 5) - ((2)/(7)y - (2)/(3)y^(2) + 2) - ((1)/(7)y - 3 + 2y^(2))

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

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

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

Add: (i) x y^2+4x^2y-7x^2y-3x y^2+3\ a n d\ x^2y+x y^2 (ii) 5x^2+7y-6z^2,\ 4y+3x^2,9x^2+2z^2-9y\ a n d\ 2y-2x^2

Add: (i) x y^2+4x^2y-7x^2y-3x y^2+3\ a n d\ x^(2y)+x y^2 (ii) 5x^2+7y-6z^2,\ 4y+3x^2,9x^2+2z^2-9y\ a n d\ 2y-2x^2