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What is the greatest common factor of the numerator and denominator of the rational expression below? 5x-20/x^2-2x-8
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What is the greatest common factor of the numerator and denominator of the rational expression below? 5x-20/x^2-2x-8

User Mario Lurig
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1 Answer

4 votes
Factories both equations:
5(x - 4) / (x + 2)(x - 4)

Then take out the common brackets:
5 / x + 2

Minus 2 from both sides:
3 / x

If you are looking for the greatest common factor of the numerator and denominator, the answer would be (x - 4)
User MichaelsonBritt
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8.5k points
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