当分式(x+3)/(3x-1)的值为0时,求分式(x-3)/(x^2-2x-3)的值
问题描述:
当分式(x+3)/(3x-1)的值为0时,求分式(x-3)/(x^2-2x-3)的值
答
由(x+3)/(3x-1)的值为0得x= -3,
所以(x-3)/(x^2-2x-3)=(-3-3)/(9+6-3)=-1/2.