x^2+(64-4x 4 )^2=160 X等于多少x^2+(64-4x/ 4 )^2=160
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x^2+(64-4x4)^2=160X等于多少x^2+(64-4x/4)^2=160x^2+(64-4x4)^2=160X等于多少x^2+(64-4x/4)^2=160x^2+(64-4x4)^2=1
x^2+(64-4x 4 )^2=160 X等于多少x^2+(64-4x/ 4 )^2=160
x^2+(64-4x 4 )^2=160 X等于多少
x^2+(64-4x/ 4 )^2=160
x^2+(64-4x 4 )^2=160 X等于多少x^2+(64-4x/ 4 )^2=160
x^2+(64-4x/ 4 )^2=160
x^2+(16-x)^2=160
x^2+x^2-32x+256=160
2x^2-32x+96=0
x^2-16x+48=0
(x-4)(x-12)=0
x1=4 x2=12
啥意思?4x 4 中间怎么还有空格
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