作业帮通分2/x^2-6+8,1/x^2+x-6,3-x/12+x-x^2
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通分2/x^2-6+8,1/x^2+x-6,3-x/12+x-x^2
通分2/x^2-6+8,1/x^2+x-6,3-x/12+x-x^2
通分2/x^2-6+8,1/x^2+x-6,3-x/12+x-x^2
2/(x^2-6+8)
=2/(x-2)(x-4)
=2(x+3)/(x-2)(x+3)(x-4)
1/x^2+x-6
=1/(x-2)(x+3)
=(x-4)/(x-2)(x+3)(x-4)
(3-x)/(12+x-x^2)
=(x-3)/(x+3)(x-4)
=(x-2)(x-3)/(x-2)(x+3)(x-4)
2/(x^2-6x+8)
=2/(x-2)(x-4)
=2(x+3)/(x+3)(x-2)(x-4)
1/(x^2+x-6)
=1/(x+3)(x-2)
=(x-4)/(x+3)(x-2)(x-4)
(3-x)/(12+x-x^2)
=(x-3)/(x^2-x-12)
=(x-3)/(x-4)(x+3)
=(x+3)(x-3)/(x+3)(x-2)(x-4)