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98.6乘98.6减98.5乘98.7怎么简便计算

=98.6^2-(98.6-0.1)(98.6+0.1) =98.6^2-98.6^2+0.1^2

98.6×98.6-98.5×98.7的简便算法 98.6×98.6-98.5×98.7 =98.6

这里需要利用平方差公式进行简便运算: 98.6×98.6-98.5×98.7 =98.6&#

98.6²+(98.6-0.1)×(98.6+0.1) = 98.6

98.6×98.6-98.5×98.7 =98.6×98.7-98.6×0.1-98.5×98.7

98.6*98.6-98.5*98.7 =98.6*98.6-(98.6-0.1)*(98.6+0

98点6×98点6-98点5×98点七 =98.6*98.6-98.5*98 =98.6*98.

68.6*98.6-98.5*98.7 =68.6*98.6-(98.6-0.1)(98.6+0.

解题过程:

98.6x98.6-98.5x98.7 =98.6x98.6-(98.6-0.1)x(98.6+0

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