The expanded form of (x + y) ( x - y) is a `"______"`

The expanded form of (x+ y)^(2) is a "_______" .

Expand : (x-2y + 6)( x-2y -6) .

By using an appropriate identity , expand the following : (x + y) ( x - y) (x^(2) + y^(2))

Expand : (5x +2y)(5x + 4y)

Expand : (5x + y + 2z)^(2)

Write each of the following in the expanded form (i)(4x+3y)^(^^)3+(4x-3y)^(^^)3 (ii) (4x+3y)^(^^)3-(4x-3y)^(^^)3

Write the following in the expanded form: (i) (a b+b c+c a)^2 (ii) (x/y+y/z+z/x)^2