分解因式计算:0.582*8.69+1.236*8.69+24.78*0.869+0.5704*86.9
问题描述：
分解因式计算:0.582*8.69+1.236*8.69+24.78*0.869+0.5704*86.9
答
0.582*8.69+1.236*8.69+24.78*0.869+0.5704*86.9 =0.582*0.869*10+1.236*0.869*10+24.78*0.869+0.5704*0.869*100=0.869*(5.82+12.36+24.78+57.04)=0.869*100=86.9