若x^2=4/9,则x=几.若x=-27,则X=几.
问题描述:
若x^2=4/9,则x=几.若x=-27,则X=几.
答
若x^2=4/9,则x=±2/3
x=-27,则X=-27
若x^2=4/9,则x=几.若x=-27,则X=几.
若x^2=4/9,则x=±2/3
x=-27,则X=-27