Reduce the rational expression x^2 - 10x + 21/ x^2 -6x -7 to its lowest term

the  rational expression  to its lowest term is .

Step-by-step explanation:

Here we need to reduce the  rational expression x^2 - 10x + 21/ x^2 -6x -7 to its lowest term . Let's find out:

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Therefore , the  rational expression  to its lowest term is .