If a = 8 +3√7 and b = 1 /8+3√7 show that a²+b²=254
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- Butanol is a four-carbon alcohol with a formula of C₄H₉OH, which occurs in five isomeric structures, from a straight-chain primary alcohol to a branched-chain tertiary alcohol; all are a butyl or isobutyl group linked to a hydroxyl group.
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