已知x,y为有理数,且|x-1|+2(y+3)^2=0.求x^2012-(1/3)^2013xy^2(接上文)012的值
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已知x,y为有理数,且|x-1|+2(y+3)^2=0.求x^2012-(1/3)^2013xy^2(接上文)012的值
已知x,y为有理数,且|x-1|+2(y+3)^2=0.求x^2012-(1/3)^2013xy^2
(接上文)012的值
已知x,y为有理数,且|x-1|+2(y+3)^2=0.求x^2012-(1/3)^2013xy^2(接上文)012的值
∵|x-1|+2(y+3)^2=0
∴x-1=0 y+3=0
∴x=1 y=-3
∴原式=1^2012-(1/3)^2013*(-3)^2012
=1-1/3*(1/3*3)^2012
=1-1/3
=2/3
x等于1,y等于-3 因为|x-1|+2(y+3)^2=0. |x-1|大于等于0 , (y+3)^2一定大于等于0,所以只能都等于0 x^2012=1 y^2012乘以(1/3)^2013=(1/3乘以y)^2012 乘以(1/3)=1/3 1-1/3=2/3
答案2/3