Question

已知〔X-3分之2〕次方2+|Y+1|=0,试求2分之1 X-2〔X-3分之1Y的次方2〕+〔3分之1Y次方2-2分之3X〕的值

详细谢谢

Answer 1

(x-2/3)^2+|y+1|=0
∵(x-2/3)^2≥0,|y+1|≥0
∴(x-2/3)^2=0,|y+1|=0
x=2/3,y=-1
1/2*(x-1/3*y^2)+(1/3*y^2-3/2x)
=1/2*(2/3-1/3)+(1/3-3/2*2/3)
=1/6+(-2/3)
=-1/2