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October 21, 2014

October 21, 2014

Posted by **math help** on Sunday, December 5, 2010 at 10:31pm.

Show work for solving and for checking.

x+1/x-1 - 2/x^2-x=0

- algebra -
**Henry**, Tuesday, December 7, 2010 at 5:33pm(x + 1) / (x - 1) - 2 / (x^2 - x) = 0.

Common denominator = (X^2 - x).

(x^2 + x - 2) / (x^2 - x),

Factor numerator and denominator:

(x - 1) (x + 2) / x(x - 1),

Cancel the (x - 1) factors and get:

(x + 2) / x = 0,

Cross multiply:

x + 2 = 0,

x = -2.

Check:

(-2 + 1) / (-2 -1) - 2 / ((-2)^2 - (-2)),

(-1 / -3) - 2 / 6,

1 / 3 - 1 / 3 = 0.

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