已知三次根号下x-1/8+三次根号下1/8-x+(y+2)=0,求xy+2x的立方根
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已知三次根号下x-1/8+三次根号下1/8-x+(y+2)=0,求xy+2x的立方根
已知三次根号下x-1/8+三次根号下1/8-x+(y+2)=0,求xy+2x的立方根
已知三次根号下x-1/8+三次根号下1/8-x+(y+2)=0,求xy+2x的立方根
令³√(x-1/8)= t
则³√(1/8-x)= -t
∴原式=t-t+(y+2)=0,y=-2
³√(xy+2x)=³√x(y+2)=0.
我也要过程