Question

已知|x+y+3|+（x-y-1）²=0,求1/2{【（-x^﹣²）y】²}^﹣3

Answer 1

已知|x+y-3|+(x-y-1)^2=0

则x+y-3=0

x-y-1=0

所以x=2,y=1

1/2[(-x^2·y)^2]^3

=1/2[(-2^2·1)^2]^3=2048

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