运用公式计算181平方-61平方除以301平方-181平方
网友回答
181平方-61平方除以301平方-181平方
=【(181+61)(181-61)】/(301+181)(301-181)
=(242*120)/(482*120)
=242/482
=121/241
======以下答案可供参考======
供参考答案1:
(181²-61²)÷(301²-181²)=(181+61)(181-61)÷[(301+181)(301-181)]=242×120÷(482×120)=242/482=121/241