一.（1）AB=x+0.5x+1.5x=3x
C=AB*2+3y*2+2y*2=3x*2+6y+4y=6x+10y
(2) S=AB*3y+0.5x*2y=9xy+xy=10xy
二.（1）2a²b-3a-3a²b+2a
=-a²b-a
=-a(ab+1)
=-(-1/2)(-2+1)
=-1/2
(2)3x²+4x-2x²-x+x²-3x-1
=(3x²-2x²+x²)+(4x-x-3x)-1
=2x²-1
=17
一.（1）AB=x+0.5x+1.5x=3x
C=AB*2+3y*2+2y*2=3x*2+6y+4y=6x+10y
(2) S=AB*3y+0.5x*2y=9xy+xy=10xy
二.（1）2a²b-3a-3a²b+2a
=-a²b-a
=-a(ab+1)
=-(-1/2)(-2+1)
=-1/2
(2)3x²+4x-2x²-x+x²-3x-1
=(3x²-2x²+x²)+(4x-x-3x)-1
=2x²-1
=17