已知(x^2+y^2)^2-y^2=x^+6,求x^2+y^2的值
已知(x^2+y^2)^2-y^2=x^+6,求x^2+y^2的值
数学人气:468 ℃时间:2020-02-20 19:40:45
优质解答
把x^2+y^2=t t^2-t-6=0 (t-3)(t+2)=0 由于t>0 所以t=3
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