1.(4x^ay^2)+(-4x^3y^2)=0 a=3 b=-4
原式得:-(-4a)-2+(-12a)-(-20a)+3
=4a-2-12a+20a+3
=12a+1=12*3+1=37
2.(5x^2)+x+(-5x^2)-x+6
=(5-5)x^2+(1-1)x+6
=6
3.(2/3+1/3)x-10y
=x-10y
1.(4x^ay^2)+(-4x^3y^2)=0 a=3 b=-4
原式得:-(-4a)-2+(-12a)-(-20a)+3
=4a-2-12a+20a+3
=12a+1=12*3+1=37
2.(5x^2)+x+(-5x^2)-x+6
=(5-5)x^2+(1-1)x+6
=6
3.(2/3+1/3)x-10y
=x-10y