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April 19, 2015

April 19, 2015

Posted by **shirley** on Saturday, August 27, 2011 at 5:49pm.

- algebra -
**Damon**, Saturday, August 27, 2011 at 7:13pm2 x^2 - 3 x - 2 = 0

x = [ 3 +/- sqrt (9 + 16) ]/ 4

x = [ 3 +/- sqrt(25) ]/ 4

= [3+5]/4

or

= [3-5]/4

= 2 or -1/2

check:

------------

(x-2)(2x + 1) = 2 x^2 -3x - 2 yes

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