【解分式方程】(x+2)分之(x-2)=(x²-4)分之3 + 1 1.2x分之50.4 - x分之26 = 8【解分式方程】(x+2)分之(x-2)=(x²-4)分之3 + 11.2x分之50.4 - x分之26 = 8【化简】(x-3)分之1-(x+3)分之1

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【解分式方程】(x+2)分之(x-2)=(x²-4)分之3 + 1 1.2x分之50.4 - x分之26 = 8【解分式方程】(x+2)分之(x-2)=(x²-4)分之3 + 11.2x分之50.4 - x分之26 = 8【化简】(x-3)分之1-(x+3)分之1

【解分式方程】(x+2)分之(x-2)=(x²-4)分之3 + 1 1.2x分之50.4 - x分之26 = 8【解分式方程】(x+2)分之(x-2)=(x²-4)分之3 + 11.2x分之50.4 - x分之26 = 8【化简】(x-3)分之1-(x+3)分之1
【解分式方程】(x+2)分之(x-2)=(x²-4)分之3 + 1 1.2x分之50.4 - x分之26 = 8
【解分式方程】
(x+2)分之(x-2)=(x²-4)分之3 + 1
1.2x分之50.4 - x分之26 = 8
【化简】
(x-3)分之1-(x+3)分之1

【解分式方程】(x+2)分之(x-2)=(x²-4)分之3 + 1 1.2x分之50.4 - x分之26 = 8【解分式方程】(x+2)分之(x-2)=(x²-4)分之3 + 11.2x分之50.4 - x分之26 = 8【化简】(x-3)分之1-(x+3)分之1
(x+2)分之(x-2)=(x²-4)分之3 + 1
乘以(x+2)(x-2)得
(x-2)²=3+x²-4
x²-4x+4=3+x²-1
-4x=3-1-4
-4x=-2
x=½
1.2x分之50.4 - x分之26 = 8
x分之42- x分之26 =8
x分之16 =8
x=2
3.(x-3)分之1-(x+3)分之1
=(x+3)/(x²-9)-(x-3)/(x²-9)
=6/(x²-9)

1.
(x-2)/(x+2)=3/(x²-4)+1, (x-2)/(x+2)=3/[(x-2)(x+2)]+1, (x-2)²=3+(x²-4), x²-4x+4=x²-1
4x=5, x=5/4
2.
50.4/(1.2x)-26/x=8, 42/x-26/x=8, 16/x=8, x=2
3.
1/(x-3)-1/(x+3)=[(x+3)-(x-3)]/[(x-3)(x+3)]=6/(x²-9)