Bobtbobthebuilder16 Bobtbobthebuilder16

24-07-2017
Mathematics

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Which value is a discontinuity of x^2+7x+1/x^2+2x-15? x=-1 x=-2 x=-5 x=-4

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LammettHash LammettHash

24-07-2017

[tex]\dfrac{x^2+7x+1}{x^2+2x-15}=\dfrac{x^2+7x+1}{(x+5)(x-3)}[/tex]

which is undefined when [tex]x=-5[/tex] or [tex]x=3[/tex]. The answer is then the third choice.

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