1) factorise the following -
i) 7 (2x -y) whole square -25( x - 2 y) + 12
ii) 7 (2x -y) whole square -25 (2x - y ) +12
2) if a=2+root 3 +root 5 and b =3 + root 3 -root 5 , find (a-2) whole square + (b - 3) whole square .