simplify by removing factors of one

is there any easy way to know how to remove factors of one with fractions?

y squared -11y+30 divided by y squared +y-30

  Does anyone know rational expressions being undefined? putting the denominator to zero, does the numerator have no bearing?

w squared +1 divided by w squared -6w-27
in Algebra 2 Answers by Level 1 User (400 points)

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