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December 20, 2014

December 20, 2014

Posted by **ROCKY** on Thursday, July 28, 2011 at 12:07pm.

x-1=30¨T¡úx=31 or(x-2)¨T30¨T¡úx=32 However, at least on of these solutions fails to work when subsitituted back into the orignal equation. Why is that? Please help Eric to understand better, solve the problem yourself, and explain your reasoning.

- intermediate algebra -
**drwls**, Thursday, July 28, 2011 at 7:23pmI cannot interpret your T¡ú symbol.

x^2 +x -2 -30 = 0

x^2 +x -32 = 0

Use the quadratic equation to solve.

x = [-1 +/-sqrt129]/2 = 5.1789 or -6.1789

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