先化简,再求值,x²-1分之x-3 乘 x-3分之x²+2x+1 减 (x-1分之1 +1 ),其中x=-5分之6(要详细过程)
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![先化简,再求值,x²-1分之x-3 乘 x-3分之x²+2x+1 减 (x-1分之1 +1 ),其中x=-5分之6(要详细过程)](/uploads/image/z/7173123-51-3.jpg?t=%E5%85%88%E5%8C%96%E7%AE%80%2C%E5%86%8D%E6%B1%82%E5%80%BC%2Cx%26%23178%3B-1%E5%88%86%E4%B9%8Bx-3+%E4%B9%98+x-3%E5%88%86%E4%B9%8Bx%26%23178%3B%2B2x%2B1+%E5%87%8F+%28x-1%E5%88%86%E4%B9%8B1+%2B1+%EF%BC%89%2C%E5%85%B6%E4%B8%ADx%3D-5%E5%88%86%E4%B9%8B6%EF%BC%88%E8%A6%81%E8%AF%A6%E7%BB%86%E8%BF%87%E7%A8%8B%EF%BC%89)
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先化简,再求值,x²-1分之x-3 乘 x-3分之x²+2x+1 减 (x-1分之1 +1 ),其中x=-5分之6(要详细过程)
先化简,再求值,x²-1分之x-3 乘 x-3分之x²+2x+1 减 (x-1分之1 +1 ),其中x=-5分之6(要详细过程)
先化简,再求值,x²-1分之x-3 乘 x-3分之x²+2x+1 减 (x-1分之1 +1 ),其中x=-5分之6(要详细过程)
,x²-1分之x-3 乘 x-3分之x²+2x+1 减 (x-1分之1 +1 )
=(x-3)/(x+1)(x-1) ×(x+1)²/(x-3) -[1/(x-1)+(x-1)/(x-1)]
=(x+1)/(x-1)-x/(x-1)
=1/(x-1)
当x=-6/5时
原式=1/(-6/5-1)=-5/11