1.2005^0 — 2^2 + (1/3)^-12.4/a^2-4 + 2/a+2 —1/a-2分式解方程:3.5/x-1 = 3/x+14.1-x/x-2 = (1/2-x) -25.a/x-a +b = 1 (b不等1)6.(a-b+4ab/a-b)(a+b-4ab/a+b)填空题:7.当X=______时,分式4-x/x-3无意义;当X=______时,分式x^2-9/
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![1.2005^0 — 2^2 + (1/3)^-12.4/a^2-4 + 2/a+2 —1/a-2分式解方程:3.5/x-1 = 3/x+14.1-x/x-2 = (1/2-x) -25.a/x-a +b = 1 (b不等1)6.(a-b+4ab/a-b)(a+b-4ab/a+b)填空题:7.当X=______时,分式4-x/x-3无意义;当X=______时,分式x^2-9/](/uploads/image/z/6994698-42-8.jpg?t=1.2005%5E0+%E2%80%94+2%5E2+%2B+%EF%BC%881%2F3%EF%BC%89%5E-12.4%2Fa%5E2-4+%2B+2%2Fa%2B2+%E2%80%941%2Fa-2%E5%88%86%E5%BC%8F%E8%A7%A3%E6%96%B9%E7%A8%8B%EF%BC%9A3.5%2Fx-1+%3D+3%2Fx%2B14.1-x%2Fx-2+%3D+%281%2F2-x%29+-25.a%2Fx-a+%2Bb+%3D+1+%28b%E4%B8%8D%E7%AD%891%EF%BC%896.%EF%BC%88a-b%2B4ab%2Fa-b%29%28a%2Bb-4ab%2Fa%2Bb%29%E5%A1%AB%E7%A9%BA%E9%A2%98%EF%BC%9A7.%E5%BD%93X%3D______%E6%97%B6%2C%E5%88%86%E5%BC%8F4-x%2Fx-3%E6%97%A0%E6%84%8F%E4%B9%89%EF%BC%9B%E5%BD%93X%3D______%E6%97%B6%2C%E5%88%86%E5%BC%8Fx%5E2-9%2F)
1.2005^0 — 2^2 + (1/3)^-12.4/a^2-4 + 2/a+2 —1/a-2分式解方程:3.5/x-1 = 3/x+14.1-x/x-2 = (1/2-x) -25.a/x-a +b = 1 (b不等1)6.(a-b+4ab/a-b)(a+b-4ab/a+b)填空题:7.当X=______时,分式4-x/x-3无意义;当X=______时,分式x^2-9/
1.2005^0 — 2^2 + (1/3)^-1
2.4/a^2-4 + 2/a+2 —1/a-2
分式解方程:
3.5/x-1 = 3/x+1
4.1-x/x-2 = (1/2-x) -2
5.a/x-a +b = 1 (b不等1)
6.(a-b+4ab/a-b)(a+b-4ab/a+b)
填空题:
7.当X=______时,分式4-x/x-3无意义;当X=______时,分式x^2-9/x-3的值为0.
8.科学计数法表示:—0.000 0064=___________
9.分式2/x^2+2x 与 3/x^2-4的最简公分母是________
1.2005^0 — 2^2 + (1/3)^-12.4/a^2-4 + 2/a+2 —1/a-2分式解方程:3.5/x-1 = 3/x+14.1-x/x-2 = (1/2-x) -25.a/x-a +b = 1 (b不等1)6.(a-b+4ab/a-b)(a+b-4ab/a+b)填空题:7.当X=______时,分式4-x/x-3无意义;当X=______时,分式x^2-9/
1.0 2.1\(a+2)
3.分式两边同时*(X-1)(X+1)得:5(X+1)=3(X-1):
移项得:2X= -3-5
解得:X= -4
4.原式可化为:X-1/X-2=X-3/2-X
通分得:X-1=3-X
解得:X=2
5.移项得:a/x=a-b
解得:x=(a-b)/a
6.原式=((a-b)^2+4ab)/(a-b))*((a+b)^2-4ab)/(a+b))
=(a+b)^2/(a-b)*(a-b)^2/(a+b)
=(a+b)(a-b)
=a^2-b^2
7.3 -3
8.-6.4*10^6
9.1/X^2
1.1-4+3=0 2.原试=4/a^2-4+2(a-2)/a^2-4-a+2 /a^2-4=10-A/a^2-4
3.分式两边同时*(X-1)(X+1)得:5(X+1)=3(X-1):
移项得:2X= -3-5
解得:X= -4
4.原式可化为:X-1/X-2=X-3/2-X
通分得:X-1=3-X
...
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1.1-4+3=0 2.原试=4/a^2-4+2(a-2)/a^2-4-a+2 /a^2-4=10-A/a^2-4
3.分式两边同时*(X-1)(X+1)得:5(X+1)=3(X-1):
移项得:2X= -3-5
解得:X= -4
4.原式可化为:X-1/X-2=X-3/2-X
通分得:X-1=3-X
解得:X=2
5.移项得:a/x=a-b
解得:x=(a-b)/a
6.原式=((a-b)^2+4ab)/(a-b))*((a+b)^2-4ab)/(a+b))
=(a+b)^2/(a-b)*(a-b)^2/(a+b)
=(a+b)(a-b)
=a^2-b^2
收起
5. a/x-a +b=1
a/x-a=1-b
a=(1-b)*(x-a)
a/1-b=x-a
x=a/1-b +a