" (ii) "(-x+2y+z)^(2)

Write the following in expanded form: (i) (9x+2y+z)^(2)( ii) (3x+2y-z)^(2)( iii) (x-2y-3z)^(2)( iv) (-x+2y+z)^(2)

Write the following in expanded form: (9x+2y+z)^(2)( ii) (3x+2y-z)^(2)

Write the following in expanded form: (i) (9x+2y+z)^2 (ii) (3x+2y-z)^2 (iii) (x-2y-3z)^2 (iv) (-x+2y+z)^2

Factorise the following x^(2) - (y - z)^(2)

(3x - 2y + z)^2 - ( 3x + 2y - z)^2

Prove that |{:(x^(2),,x^(2)-(y-z)^(2),,yz),(y^(2),,y^(2)-(z-x)^(2),,zx),(z^(2),,z^(2)-(x-y)^(2),,xy):}| =(x-y) (y-z) (z-x)(x+y+z) (x^(2)+y^(2)+z^(2))

Prove that |{:(x^(2),,x^(2)-(y-z)^(2),,yz),(y^(2),,y^(2)-(z-x)^(2),,zx),(z^(2),,z^(2)-(x-y)^(2),,xy):}| =(x-y) (y-z) (z-x)(x+y+z) (x^(2)+y^(2)+z^(2))