计算：60又1/3*59又2/3,用平方差公式解计算

Question

计算：60又1/3*59又2/3 ,用平方差公式解计算

Answer 1

60又1/3*59又2/3
=(60+1/3)*(60-1/3)
=60^2-(1/3)^2
=3600-1/9
=3599+8/9
=3599又8/9