Simplify `3y^(3) - [ 7y^(2) -{ - 2y^(3) -(2- 4y^(2))+6y -y^(2)}] `

Simplify (2y - 1) (3-4y)

Simplify: ((x^(2)-y^(2))^(3) + (y^(2) - z^(2))^(3) + (z^(2) -x^(2))^(3))/((x-y)^(3) + (y-z)^(3) + (z-x)^(3))

Divide : 36x^(2)y^(2) + 42 xy^(3) - 24 x^(3)y^(2) - 12 y^(5) by - 6y^(2)

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

Simplify : 5y xx [6y div 3 + {4 - (3y - bar(2y - 4))}]

Simplify: 2-3z^(2)+5yz+7y^(2)-8+z^(2)-6yz-9y^(2)+1-2z^(2)-2yz-y^(2)

Simplify: (4-y)-2(2y - 3)

Simplify (2y -1) (4y - 3)

Simplify: x^2(x+2y)(x-3y)

Simplify the following : 3xy^(2) - 5x^(2)y + 7xy - 9xy^(2) - 4xy + 6x^(2)y