简便运算:102*98

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简便运算:102*98简便运算:102*98简便运算:102*98102*98=(100+2)(100-2)=100^2-2^2=10000-4=9996102*98=(100+2)(100-2)=1

简便运算:102*98
简便运算:102*98

简便运算:102*98
102*98
=(100+2)(100-2)
=100^2-2^2
=10000-4
=9996

102*98
=(100+2)(100-2)
=100^2-2^2
=10000-4
=9996

102×98
=(100+2) ×98
=100×98+2×98
=9800+196
=9996

102×98
=(100+2)×(100—2)
=100×100-2×2
=10000-4
=9996
选我哦!