anonymous
  • anonymous
Simplify:
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
\[\frac{ x ^{2}-3x-18 }{ x ^{2}-36 }\]
skullpatrol
  • skullpatrol
Any ideas?
anonymous
  • anonymous
x-6/x-3

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More answers

anonymous
  • anonymous
x+6/x-6
anonymous
  • anonymous
x-3/x+3
anonymous
  • anonymous
x+3/x+6
skullpatrol
  • skullpatrol
Do you recognise a difference of two squares in the denominator?
anonymous
  • anonymous
36 divided be 18 is 2
anonymous
  • anonymous
by
skullpatrol
  • skullpatrol
$$\huge x^2-36=x^2-6^2$$
anonymous
  • anonymous
ok
skullpatrol
  • skullpatrol
Recall $$\huge a^2-b^2=?$$
anonymous
  • anonymous
no
skullpatrol
  • skullpatrol
$$\huge a^2-b^2=(a+b)(a-b)$$
anonymous
  • anonymous
@AkashdeepDeb
anonymous
  • anonymous
ok so??
AkashdeepDeb
  • AkashdeepDeb
skullpatrol will help you.
skullpatrol
  • skullpatrol
Please apply this formula to the denominator of your question.
skullpatrol
  • skullpatrol
I can help you learn, but I can't learn for you :-)
anonymous
  • anonymous
k but it makes no sense
skullpatrol
  • skullpatrol
What makes no sense?
skullpatrol
  • skullpatrol
Apply this formula: $$a^2-b^2=(a+b)(a-b)$$ to $$x^2-6^2$$
skullpatrol
  • skullpatrol
Please try to learn...
skullpatrol
  • skullpatrol
In 2 minutes I'm gone.
skullpatrol
  • skullpatrol
|dw:1378408313157:dw|
anonymous
  • anonymous
sorry im on a different website
skullpatrol
  • skullpatrol
OK factor the denominator please...
AkashdeepDeb
  • AkashdeepDeb
Look up some websites @Sav_1012 No point in knowing the answer without knowing anything about how to get it. :/ Look up some khanacademy videos. If you want I can send some links. :)
skullpatrol
  • skullpatrol
^good advice

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