2^2x+1 = (1/8)
2x+1(ln 2) = ln (1/8)
divide both sides by ln2. that leaves
2x+1 = (ln (1/8)/ln 2)
subtract 1 from each side that leaves
2x = ((ln (1/8)/ln 2) -1) divide both sides by 2 that leaves
x = (((ln (1/8)/ln 2) - 1)/2)

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