解无理方程(3x-3)^½ +(5x-19)^½ -(2x+8 )^½=0
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解无理方程(3x-3)^½ +(5x-19)^½ -(2x+8 )^½=0
解无理方程(3x-3)^½ +(5x-19)^½ -(2x+8 )^½=0
解无理方程(3x-3)^½ +(5x-19)^½ -(2x+8 )^½=0
(3x-3)^½ +(5x-19)^½ =(2x+8 )^½(3x-3)+(5x-19)+2((3x-3)^½ *(5x-19)^½)=2x+82((3x-3)^½ *(5x-19)^½)=-6x+30(3x-3)*(5x-19)=(-3x+15)^2然后就是二次方程了.