(1/8+5/12)*(-24)+12*(1/2-1/3)/2/3=-2*(-1/2)的平方+|1-3|的立方-（-1/2)=3x的平方y-{2x的平方y-3(2xy-x的平方y-x的平方y)-xy}

Question

(1/8+5/12)*(-24)+12*(1/2-1/3)/2/3= -2*(-1/2)的平方+|1-3|的立方-（-1/2)=
3x的平方y-{2x的平方y-3(2xy-x的平方y-x的平方y)-xy}

Answer 1

(1/8+5/12)*(-24)+12*(1/2-1/3)/2/3
=-24x1/8-5/12x24+18*(1/2-1/3)
=-3-10+18x1/2-18x1/3
=-13+9-6
=-10
-2*(-1/2)的平方+|1-3|的立方-（-1/2)
=-2*1/4+2^3+1/2
=-1/2+8+1/2
=8
3x的平方y-{2x的平方y-3(2xy-x的平方y-x的平方y)-xy}
=3x²y-2x²y+6xy-3x²y-3x²y+xy
=-5x²y+7xy