（x²/x-2+4/2-x)÷x+2/2x等于
（x²/x-2+4/2-x)÷x+2/2x等于
最后等于 1/x
(x²/x-2+4/2-x)÷x+2/2x计算
您好：
(x²/x-2+4/2-x)÷x+2/2x
=(x²/x-2-4/x-2)÷x+2/2x
=(x²-4)/(x-2)÷（x+2)/2x
=(x+2)(x-2)/(x-2)÷(x+2)/2x
=2x
不明白，可以追问如有帮助，记得采纳
如追加其它问题，采纳本题后另发并点击向我求助，谢谢
祝学习进步！
化简(x²/x-2+4/2-x)÷x+2/x
您好：
(x²/x-2+4/2-x)÷x+2/x
=（x²-4）/(x-2)÷（x+2）/x
=(x+2)(x-2)/(x-2) *x/(x+2)
=x
如果本题有什么不明白可以追问，如果满意记得采纳
如果有其他问题请另发或点击向我求助，答题不易，请谅解，谢谢。
祝学习进步！
化简求值,当x=根号2时,(x²/x-2+4/2-x)×1/x²+2x
(x²/x-2+4/2-x)×1/x²+2x
=(x²/x-2-4/x-2)×1/x²+2x
=(x²-4/x-2)/x(x+2)
=x²-4x(x+2)(x-2)
=(x+2)(x-2)/x(x+2)(x-2)
=1/x
x=根号2
化简的等式等于1/根号2 分母有理化后得到答案为 根号2/2
(x+2/x²-2x-x-1/x²-4x+4)*x/x-4
[(x+2)/(x²-2x)-(x-1)/(x²-4x+4)]*x/(x-4)
=[(x+2)(x-2)-x(x-1)]/[x(x-2)²]*x/(x-4)
=(x-4)/[x(x-2)²]*x/(x-4)
=1/(x-2)²
=1/(x²-4x+4)
有疑问，请追问；若满意，请采纳，谢谢！
x+2/x²-4=( )/2-x 分式 填空
x+2/x²-4=(-1)/2-x
化简，x²+4x /(2x-4)(x+4)-x+2/x² -4
x²+4x /(2x-4)(x+4)-x+2/x² -4
=x(x+4)/2(x-2)(x+4)-(x+2)/(x+2)(x-2)
=x/2(x-2)-1/（x-2)
=x/2(x-2)-2/2(x-2)
=(x-2)/2(x-2)
=1/2
①（2a/a-1-a/a+1）*a²-1/a ②（x+2/x²-2x-x-1/x²-4x+4）÷x-4/x
①（2a/a-1-a/a+1）*a²-1/a
=[2a(a+1)-a(a-1)]/(a-1)(a+1）* a²-1/a
=[2a²+2a-a²+a)]/(a²-1)* a²-1/a
=[a²+3a]/a
=a+3
②（x+2/x²-2x-x-1/x²-4x+4）÷x-4/x
=[（x+2)/x(x-2) -x-1/(x-2)²] *x/(x-4)
={[（x+2)(x-2) -x(x-1)]/x(x-2)²} *x/(x-4)
={[x²-4-x²+x]/x(x-2)²} *x/(x-4)
=[(x-4)/x(x-2)²] *x/(x-4)
=1/(x-2)²
急呀~！(x²/ x-2 + 4/ 2-x )÷ (x+2)/2x
(x²/ x-2 + 4/ 2-x )÷ (x+2)/2x
=[x²/(x-2)-4/(x-2)] ×2x/(x+2)
=(x²-4)/(x-2)×2x/(x+2)
=(x+2)(x-2)/(x-2)×2x/(x+2)
=2x
(3+2x)/(2-x)+(3x-2)/(x+2)+(x²-16x)/(4-x²)
(3+2x)/(2-x)+(3x-2)/(x+2)+(x²-16x)/(4-x²)
=[(3+2x)(2+x)+(3x-2)(2-x)]/(4-x²)+(x²-16x)/(4-x²)
=[6+4x+3x+2x²+6x-3x²-4+2x]/(4-x²)+(x²-16x)/(4-x²)
=(2+15x-x²)/(4-x²)+(x²-16x)/(4-x²)
=(2+15x-x²+x²-16x)/(4-x²)
=(2-x)/[(2+x)(2-x)]
=1/(x+2)
