数学有理数运算(3²-2²)*(12-13)³/2又3/8+|-2|³-3³

数学有理数运算(3²-2²)*(12-13)³/2又3/8+|-2|³-3³
数学有理数运算
(3²-2²)*(12-13)³/2又3/8+|-2|³-3³

数学有理数运算(3²-2²)*(12-13)³/2又3/8+|-2|³-3³
(3²-2²)*(12-13)³/2又3/8+|-2|³-3³
=（9-4）×（-1）÷8分之19 ＋8-27
=-5×19分之8-19
=-19分之40-19
=-21又19分之2

(3²-2²)*(12-13)³/2又3/8+|-2|³-3³
=(9-4)*(-1)³/19/8+2³-9
=5*(-1)*8/19+8-9
=-40/19-1
=-59/19

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