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Fun Exponent Problem

May 17, 2005
4^{x+2}(0.5)^{-2x}=8^{x+2}
4^{x+2}2^{2x}=8^{x+2}
2^{2x+4}2^{2x}=2^{3x+6} (was 2^{2x}=2^{x+2})
2^{4x+4}=2^{3x+6}
4x+4=3x+6 (was 2x=x+2)
x=2
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