pre cal question if you can help me

Mathematics
Tutor: None Selected Time limit: 1 Day

ln x +ln (x+1) = ln 56

Oct 8th, 2015

Thank you for the opportunity to help you with your question!

ln x + ln (x+1) = ln 56

ln( x(x+1) ) = ln 56

ln (x^2 + x) =ln 56

x^2 + x = 56

x^2 + x - 56 =0

x^2 + 8x -7x -56 = 0

x(x+8) -7(x+8)= 0

(x-7) (x+8) = 0

x-7 = 0      or       x+8 =0

x= 7   or        x= -8

Please let me know if you need any clarification. I'm always happy to answer your questions.
Oct 8th, 2015

thanks for answering my question , a no everything was perfect 

Oct 8th, 2015

WELCOME

Oct 8th, 2015

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