分式计算:x^2-4/x^2+6x+9÷x+2/x+3 a/(a-2)-4a/a^2-4 1/(x-y)-1/(x+y)*x^2-2xy+y^2/(y+1)^2-(y-1)^2x^2-4/x^2+6x+9÷x+2/x+3a/(a-2)-4a/a^2-41/(x-y)-1/(x+y)*x^2-2xy+y^2/(y+1)^2-(y-1)^2
来源:学生作业学帮网 编辑:学帮网 时间:2024/06/25 05:50:32
分式计算:x^2-4/x^2+6x+9÷x+2/x+3 a/(a-2)-4a/a^2-4 1/(x-y)-1/(x+y)*x^2-2xy+y^2/(y+1)^2-(y-1)^2
x^2-4/x^2+6x+9÷x+2/x+3
a/(a-2)-4a/a^2-4
1/(x-y)-1/(x+y)*x^2-2xy+y^2/(y+1)^2-(y-1)^2
x^2-4/x^2+6x+9÷x+2/x+3
=(x²-4)/(x²+6x+9)÷(x+2)/(x+3)
=(x+2)(x-2)/(x+3)²×(x+3)/(x+2)
=(x-2)/(x+3)
a/(a-2)-4a/a^2-4
=a/(a-2)-4a/(a+2)(a-2)
=a(a+2)/(a+2)(a-2)-4a/(a+2)(a-2)
=(a²+2a-4a)/(a+2)(a-2)
=a(a-2)/(a+2)(a-2)
=a/(a+2)
1/(x-y)-1/(x+y)*x^2-2xy+y^2/(y+1)^2-(y-1)^2
=[1/(x-y)-1/(x+y)]×(x²-2xy+y²)/[(y+1)²-(y-1)²]
=[(x+y)/(x-y)(x+y)-(x-y)/(x+y)(x-y)]×(x-y)²/(y+1+y-1)(y+1-y+1)
=(x+y-x+y)/(x+y)(x-y)×(x-y)²/4y
=2y/(x+y)(x-y)×(x-y)²/4y
=(x-y)/2(x+y)
计算分式2x-4/x²+3x÷x-2/x²+6x+9
分式计算:x²+2x/x²-6x+9÷x²-4/x²-3x/是分数线
分式计算 (x+2/x-2+4/x平方-4x+4)÷x/x-2*x-2/x
分式计算x²+2x/x²-6x+9÷x²-4/x²-3xx²+2x/x²-6x+9÷x²-4x²-3x/是分数线
分式计算:(x+2)/(x^2-2x)-(x-1)/(x^2-4x+4)
用两种方法计算:(x/x-2-x/x+2)÷4x/2-x分别运用分式乘除法、加减法.
用两种方法计算:(x/x-2-x/x+2)÷4x/2-x分式乘除法、加减法.
分式的乘除法计算 x^2-9/x^2+2x乘x^2-4/x^2-3x
分式计算:x^5-4x^3+x+2/x^3+6x^2+12x+8(约分)RT
12/x^2-9+2/3-x 分式计算
分式计算 1-x/x²+x-2÷x²-1/x+2
分式计算:[(x+2)/(x^2-2x)-(x-1)/(x^2-4x+4)]/[(x-4)/x]
(x-4)/(x-5)+(x-8)/(x-9)-(x-5)/(x-6)-(x-7)/(x-8)分式计算
初二数学 分式 计算1/(x-3)-6/(x2-9)-(x-1)/(6+2x)
分式计算:2x/x2-x-2÷(1-x/x+1)-x2+2x/x2-4
分式计算:2x/x2-x-2÷(1-x/x+1)-x2+2x/x2-4
分式的乘除计算:(1)m/m²-1·m²+m/m²;(2)x-2/3-x·x²-6x+9/x²-4;(3)3x-6/x²-4÷x+2/x²+4x+4;(4)x²-2x+1/x²-1÷x-1/x²+x.
分式计算:X的平方/x+2 -x+2