d) 9x^2 – 6xy + y^2.
d) 9x2 – 6xy + y2.
d) 9x2 – 6xy + y2 = (3x)2 – 2 . 3x . y + y2 = (3x – y)2.
d) 9x2 – 6xy + y2.
d) 9x2 – 6xy + y2 = (3x)2 – 2 . 3x . y + y2 = (3x – y)2.