m²+3m=6,则m=?
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m²+3m=6,则m=?
m²+3m=6,则m=?
m²+3m=6,则m=?
m²+3m=6
(m+3/2)²=6+(3/2)²
(m+3/2)²=33/4
m+3/2=±(√33)/2
m=(-3+√33)/2或m=-(3+√33)/2
二分之 负三加减 三十三开二次方根