(m²-2m+1/m²-1+m²-m/m)÷(1+m/2,其中m=-3)
问题描述:
(m²-2m+1/m²-1+m²-m/m)÷(1+m/2,其中m=-3)
答
带入可得(9+6+1/9-1+9+1)*(-2)=-434/9能写一下过程吗?带入得(9+6+1/9-1+9+1)÷(1-3/2)
=(24+1/9)÷(-1/2)
=(217/9)×(-2)
=-434