(3-m)(m-3)怎么通分急

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(3-m)(m-3)怎么通分急

(3-m)(m-3)怎么通分急
(3-m)(m-3)怎么通分

(3-m)(m-3)怎么通分急
(3-m)=-(m-3)
(3-m)(m-3)=-(m-3)(m-3)=-(m-3)^2
ps:m^2 是2的平方,如果还要继续化简,则上式=6m-m"-9

等于-1X(m-3)(m-3)
等于-(m-3)²

(3-m)=-(m-3)
(3-m)(m-3)=-(m-3)²
=-m²+6m-9

(3-m)(m-3)
=3m-9-m^2+3m
=6m-9-m^2
ps: m^2 是2的平方。

3-m=-(m-3)
即(3-m)(m-3)=-(m-3) "
( " 表示平方的意思)
如果还要继续化简,则上式=6m-m"-9

(3-m)=-(m-3)
原式=-(m-3)(m-3)=-(m-3)的二次方

(3-m)=-(m-3)
(3-m)(m-3)=-(m-3)^2