-(0·5X-0·7)=-6·5+1.3X X等于对少,
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-(0·5X-0·7)=-6·5+1.3XX等于对少,-(0·5X-0·7)=-6·5+1.3XX等于对少,-(0·5X-0·7)=-6·5+1.3XX等于对少,-(0·5X-0·7)=-6·5+1.
-(0·5X-0·7)=-6·5+1.3X X等于对少,
-(0·5X-0·7)=-6·5+1.3X X等于对少,
-(0·5X-0·7)=-6·5+1.3X X等于对少,
-(0·5X-0·7)=-6·5+1.3X
1.3x+0.5x=0.7+6.5
1.8x=7.2
x=4
请先阅读下列解题过程,再仿作下面的问题‘已知x²+x-1=0,求x³+2x²3的值·······,如果1+x+x²+x³=0,求x+x²+x³+x⁴+x^5+x^6+x^6+x^7+x^8
-(0·5X-0·7)=-6·5+1.3X X等于对少,
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