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|dw:1413939273841:dw|
Is it No Solution??
why not? seems solvable to me
start by combining the left hand side in to one log the rewrite in equivalent exponential form
Well I solved it i got two x's. I got x = 3 and x= -2. I tried to check it but thay didnt come out right
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i meant x = -1 and 3
oops i meant \[x(x-2)=8\]
those are not the two solutions
Oh. Can you help me what the two solutions are
\[\log_2(x(x-2))=3\] is the first step
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right
\[x(x-2)=2^3\\ x(x-2)=8\] is the second
\[x^2-2x=8\]is the third, and you can solve this by completing the square or by solving \[x^2-2x-8=0\] by factoring
\[(x+2)(x-4)=0\\x=-2,x=4\] 4 works, 2 does not
i mean -2 does not
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oh ok
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