anonymous
  • anonymous
for all X not equal to -1, simplify the expression X^2+6X+5/X+1
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
the answer is x+5
anonymous
  • anonymous
the numerator simplifies to (x+5)(x+1) the (x+1) in the numerator and denomiator cancel out, leaving you with x+5
anonymous
  • anonymous
|dw:1370759391435:dw|

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anonymous
  • anonymous
when it says " x not equal to " what does that mean ?
anonymous
  • anonymous
It means just that: your expression is valid for all numbers for x except -1 The reason -1 won't work is because of your denominator; if x was -1, then your denominator would be -1+1 which is 0. And you can't divide by 0. :-)
anonymous
  • anonymous
I think it means x cannot equal to -1 because the denominator is x+1. If x=-1, the denominator would equal to 0 because (-1)+1=0. If a denominator equals to zero, the fraction is undefined :))
anonymous
  • anonymous
thank you so much :)
anonymous
  • anonymous
Aw jeez guys!! Stop!! Thank you, but sizzy was the one that did all the work. All I did was say why -1 wouldn't work. But I appreciate it, and thank you! Come to think, I'll pass my medal along (or back) to sizzy! :-)
anonymous
  • anonymous
@qweqwe123123123123111 shucks :) you're so nice hahaha
anonymous
  • anonymous
:-)

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