1.

Express each of the following as a rational expressions.(x^2-5x+6)/(x^2-9x+20) div( x^2-3x+2)/(x^2-5x+4):

Answer»

`(x-4)/(x-3)`
`(x-3)/(x-5)`
`(x-2)/(x-5)`
`(x-5)/(x-3)`

ANSWER :B


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