Simplify :
`y = ( 1 - x ) ( 1 - 2x ) ( 1 - 3x^2 )`

simplify: 3x - [3y - {2x - (y - x)}]

Simplify (2x + y) (1 + 4x + 3y) -6x (x + y)

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))

Simplify : (x^(2) - y^(2) + 2xy + 1) - (x^(2) + y^(2) + 4xy - 5)

Simplify xy [(x + y) ((1) / (x) - (1) / (y)) + (2x) / (y)]