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Mathematics 11 Online
OpenStudy (anonymous):

Hey I need Help!!

OpenStudy (anonymous):

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OpenStudy (anonymous):

Is it No Solution??

OpenStudy (anonymous):

why not? seems solvable to me

OpenStudy (anonymous):

start by combining the left hand side in to one log the rewrite in equivalent exponential form

OpenStudy (anonymous):

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

OpenStudy (anonymous):

i meant x = -1 and 3

OpenStudy (anonymous):

oops i meant \[x(x-2)=8\]

OpenStudy (anonymous):

those are not the two solutions

OpenStudy (anonymous):

Oh. Can you help me what the two solutions are

OpenStudy (anonymous):

\[\log_2(x(x-2))=3\] is the first step

OpenStudy (anonymous):

right

OpenStudy (anonymous):

\[x(x-2)=2^3\\ x(x-2)=8\] is the second

OpenStudy (anonymous):

\[x^2-2x=8\]is the third, and you can solve this by completing the square or by solving \[x^2-2x-8=0\] by factoring

OpenStudy (anonymous):

\[(x+2)(x-4)=0\\x=-2,x=4\] 4 works, 2 does not

OpenStudy (anonymous):

i mean -2 does not

OpenStudy (anonymous):

oh ok

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