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1. If loga(x + b) = c, then 2. If logx-4(x2 – 2x – 61) = 2, then x equals

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alejandrogalarce | TA , Undergraduate | (Level 1) Valedictorian

Posted May 29, 2013 at 4:24 PM via web

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1. If loga(x + b) = c, then

2. If logx-4(x2 – 2x – 61) = 2, then x equals

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crmhaske | College Teacher | (Level 3) Associate Educator

Posted May 29, 2013 at 4:43 PM (Answer #1)

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1)

`log_a(x+b)=c-gta^c=x+b`

`x=a^c-b`

2)

`log_(x-4)(x^2-2x-61)=2-gt(x-4)^2=x^2-2x-61`

`x^2-8x+16=x^2-2x-61`

`-8x+2x=-61-16`

`-6x=-77`

`x=12.83`

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