125(1+x)2=180的解题步骤
问题描述:
125(1+x)2=180的解题步骤
答
125(1+x)²=180
(1+x)²=180/125=(5×6²)/(5×5²)=6²/5²
(1+x)=±6/5
x1=6/5-1=1/5
x2=-6/5-1=-11/5