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anonymous
 3 years ago
hi whats the domain of 2x^3+5x^27x all over x^21
anonymous
 3 years ago
hi whats the domain of 2x^3+5x^27x all over x^21

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anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0all you have to do is find the domain restriction. To do that, just equate x^2  1 to 0 then solve for x. got it?

campbell_st
 3 years ago
Best ResponseYou've already chosen the best response.0just look at the denominator and find any discontinuitites

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0yea and i gotta but it in connotation

campbell_st
 3 years ago
Best ResponseYou've already chosen the best response.0so you will have after a little factorising \[\frac{2x^3 + 5x^2  7x}{(x  1)(x + 1)}\] basically the discontinuity occurs when \[x^2 1 = 0\] to find the values of x factorised and then solve...
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