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Posted by **Sara** on Monday, January 9, 2012 at 6:20pm.

4^(4x+2)= 1/64

- precalculus -
**Reiny**, Monday, January 9, 2012 at 6:58pm4^(4x+2)= 1/64

4^(4x+2)= 1/4^3

4^(4x+2)= 4^-3

so

4x+2 = -3

4x = -5

x = -5/4 or = -1.25

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