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December 28, 2014

December 28, 2014

Posted by **Elizabeth** on Thursday, April 18, 2013 at 10:20pm.

n^2-2n+1=5

- Algebra -
**DW**, Thursday, April 18, 2013 at 10:38pmn^2-2n-4=0

a=1 b=-2 c=-4

then use quadratic formula

x=(-b+sqrt(b^2-4ac))/(2a)

x=(-b-sqrt(b^2-4ac))/(2a)

x=1+sqrt(5)

x=1-sqrt(5)

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