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October 21, 2014

October 21, 2014

Posted by **amelia** on Saturday, October 24, 2009 at 1:54pm.

- algebra -
**Reiny**, Saturday, October 24, 2009 at 2:00pmLet 2^x = y

then your equation becomes

2y^2 - 5y + 2 = 0

(2y-1)(y-2) = 0

y = 1/2 or y = 2

then 2^x = 1/2 --- x = -1

or

2^x = 2 --- x = 1

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