x(x-3)/2=54怎么解
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x(x-3)/2=54怎么解
x(x-3)/2=54怎么解
x(x-3)/2=54怎么解
x(x-3)/2=54
x(x-3)=108
x²-3x-108=0
(x-12)(x+9)=0
x1=12 x2=-9
x(x-3)/2=54
x^2-3x=108
x^2-3x-108=0
(x+9)(x-12)=0
x1=-9,x2=12
x(x-3)/2=54
x(x-3)=108
x²-3x-108=0
(x-12)(x+9)=0
x1=12 x2=-9
答案12