Answers

2014-01-13T16:59:50+05:30
=1.5*1.5*x*x+1.5*4*x*y+3*1.5-4*1.5*x*y-4*4*y*y-12y-4.5x+12y
so
=2.25x*x-16y*y+4.5x-4.5x+12y-12y+4*1.5*x*y-4*1.5*x*y
so
=2.25*x*x-16*y*y
0