anonymous
  • anonymous
hi whats the domain of 2x^3+5x^2-7x all over x^2-1
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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lgbasallote
  • lgbasallote
all 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
  • campbell_st
just look at the denominator and find any discontinuitites
anonymous
  • anonymous
yea and i gotta but it in connotation

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anonymous
  • anonymous
put
campbell_st
  • campbell_st
so 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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