2) Resolva no conjunto dos reais:

a) log4 (x² + x) =1/2

b) log3 (5 – x) – log3 (x + 1) = 2

c) log16 + log4 + log2 =7/4

d) (log3 x)^2 − log3(x) − 6 = 0

Me ajudem pfvrrr
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