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Mathematics

Find x, if log4 32 = x - 4

Logarithms

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Answer

Given,

⇒ log4 32 = x - 4

⇒ 32 = 4x - 4

⇒ 25 = (22)x - 4

⇒ 25 = 22(x - 4)

⇒ 25 = 22x - 8

⇒ 5 = 2x - 8

⇒ 2x = 8 + 5

⇒ 2x = 13

⇒ x = 132=612\dfrac{13}{2} = 6\dfrac{1}{2}.

Hence, x = 6126\dfrac{1}{2}.

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