BelleFlower
Logarithms! Wait for image please!



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BelleFlower
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Part c!

hartnn
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hint : write \(2=\log_2 2^2\)

BelleFlower
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This is what I have done so far:
log_2 (x  1)^2 = log_2 4 + log_2 (x+2)
(x1)^2 = 4 + x + 2
x^2  3x  7 = 0

BelleFlower
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Is that correct?

hartnn
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no....

hartnn
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(x1)^2 = 4 ( x + 2 )
u got how ?

BelleFlower
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Oh wait is it: (x  1)^2 = 4x + 8 or am I still wrong?

BelleFlower
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@hartnn

hartnn
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now correct.

BelleFlower
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So if I solve that I should be able to get the answer right?

BelleFlower
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Okay thanks! :)

hartnn
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yes, welcome ^_^