(x-2分之5-2-x)÷x-2分之x-3其中x=根号3-2
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![(x-2分之5-2-x)÷x-2分之x-3其中x=根号3-2](/uploads/image/f/15497-17-7.jpg?t=%28x-2%E5%88%86%E4%B9%8B5-2-x%29%C3%B7x-2%E5%88%86%E4%B9%8Bx-3%E5%85%B6%E4%B8%ADx%3D%E6%A0%B9%E5%8F%B73-2)
x^2-1=(x+1)(X-1)x^2-2x+1=(x-1)^2第一项为(X+1)/(x-1)第二项为-x(x+1)so最后-1/x(x-1)
原式=[(2x-6)/(x^2-4x+4)]/(x+3)*(x^2+x-6)/(3-x)=[2(x-3)/(x-2)^2]/(x+3)*(x+3)(x-2)/(3-x)=-2/(x-2)
(x-2)/(x+3)÷[x-3+5/(x+3)]=(x-2)/(x+3)÷[(x-3)(x+3)+5]/(x+3)=(x-2)/(x+3)÷[(x²-9+5)/(x+3)]=(x-2)/(
(x-1)/x-(1-x)/(x+1)=5(x-1)/2(x+1),(x-1)/x=5(x-1)/2(x+1)+(1-x)/(x+1)=(5/2-1)(x-1)/(x+1)=3(x-1)/2(x+1)
(x+2分之2x-x-2分之x)÷x²-4分之x(x+2x/2-x-x/2)÷x²-x/4=x/2÷x²-x/4=1/2x-x/4很高兴为您解答,祝你学习进步!有不明白的
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5x/(x²+x-6)+(2x-5)/(x²-x-12)=(7x-10)/(x²-6x+8)5x/(x-2)(x+3)+(2x-5)/(x+3)(x-4)=(7x-10)
小括号内先通分:分母为x平方-4,分子为3x平方+6x,另一个是x平方-2x化简:{x²-4分之2x²+8x}÷x²-4分之2x结果=x+4
你写的看不懂分子分母的代数式用括号括起来否则分不出来先通分【((x-2)(x+2)-x(x-1))/x(x+2)(x+2)】(x+2)/(x-4)=(x-4)/x(x+2)(x-4)=1/x(x+2)
原式=[(1-1分之x+5)-(1-1分之x+4))+(1-1分之x+3)-(1-1分之x+2)]*[(x+3)(x+5)]\(x^2+7x+13)=[(1分之x+2)-(1分之x+3)+(1分之x+
题目表达不清楚
x=-1/2或x=-1/3
(x-5分之x-5-x分之x)\x的平方-25分之2x=2x/(x-5)*(x-5)(x+5)/2x=x+5
2x分之(x+2)*(x^2+5x+6)分之(x^3-3x^2)÷(x^2+2x-3)分之(x^3-9x)=2x分之(x+2)*(x+2)(x+3)分之x^2(x-3)*x(x+3)(x-3)分之(x
本人一次只回答一个算了吧或者你分开提问x/(x+2)=x/(x-1)两边乘(x+2)(x-1)x²-x=x²+2x3x=0x=0经检验,x=0是方程的解
(x²-1分之x²+1)-(x-1分之x-2)÷(x分之x-2)=(x+1)(x-1)分之(x²+1)-(x-1)分之(x-2)*(x-2)分之x=(x+1)(x-1)分
[(x+2)/x-(x-1)/(x-2)]÷(x-4)/x=[1+2/x-1-1/(x-2)]×x/(x-4)=(x-4)/x(x-2)×x/(x-4)=1/(x-2)=1/(3-2)=1这是我在静心
原式=[2x(x+1)/(x+1)(x-1)-x(x-1)/(x-1)²]÷x/(x+1)=[2x/(x-1)-x/(x-1)]×(x+1)/x=x/(x-1)×(x+1)/x=(x+1)/
(x-2-x+2分之5)÷2x+4分之x-3=(x-2-x+5/2)÷2x+x/4-3=1/2÷2x+x/4-3=1/4x+x/4-3