x/(x+3)-18/(x^2)-9=1
4个回答
x/(x+3)-18/(x^2-9)=1
x(x-3)-18=(x^2-9)
x^2-3x-18=x^2-9
3x=-9
x=-3
x=-3时x^2-9=0
方程无解
相关问题
(x-3)(x-2)+18=(x+9)(x+1)
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解不等式 (x-3)(x-2)+18≤(x+9)(x+1)
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