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Mathematics 9 Online
OpenStudy (xetsdoittt):

Check my answer for one & help with another?

OpenStudy (3mar):

Sorry, I was not here!

OpenStudy (3mar):

The first one is correct! for the second one, I am on it! Sorry for being late!

OpenStudy (xetsdoittt):

no problem :)

OpenStudy (3mar):

Thanks

OpenStudy (3mar):

\[\frac{ d^2-9d+18 }{ d^2+2d-15 }=\frac{ (d-3)(d-6) }{ (d-3)(d+5) }=\frac{ d-5 }{ d+5 }\] this is for the left-side ratio ok?

OpenStudy (xetsdoittt):

ok..

OpenStudy (3mar):

For the right-side ratio: \[\frac{ d^2-2d-8 }{ d^2+5d+6 }=\frac{ (d-4)(d+2) }{ (d+3)(d+2) }=\frac{ d-4 }{ d+3 }\] Do you follow?

OpenStudy (xetsdoittt):

yes

OpenStudy (3mar):

\[\frac{ d-5 }{ d+5 }+\frac{ d-4 }{ d+3 }=\frac{ (d-5)(d+3)+(d-4)(d+5)}{ (d+5)(d+3) }\]

OpenStudy (3mar):

\[\frac{ d^2-9d+18 }{ d^2+2d-15 }=\frac{ (d-3)(d-6) }{ (d-3)(d+5) }=\frac{ d-6 }{ d+5 }\] Sorry ... modification on the first fraction my mistake

OpenStudy (3mar):

We will reach it now

OpenStudy (3mar):

\[\frac{ d-6 }{ d+5 }+\frac{ d-4 }{ d+3 }=\frac{ (d-6)(d+3)+(d-4)(d+5)}{ (d+5)(d+3) }\] \[\frac{ (d-6)(d+3)+(d-4)(d+5)}{ (d+5)(d+3) }=\frac{ d^2+3d-6d-18+d^2+5d-4d-20 }{ (d+5)(d+3) }\] \[\huge\frac{ 2d^2-2d-38 }{ (d+5)(d+3) }\] That means you should pick B By the way, there are two identical pair of choices. you notice that?

OpenStudy (xetsdoittt):

Yes, but they are both wrong so thats why I didn't mind it. Thanks though, I'm going to start another thread & could u check my answer for another problem?

OpenStudy (3mar):

"Yes, but they are both wrong" what do you mean?

OpenStudy (xetsdoittt):

Yes, I noticed that two answers are the same but I didn't mind them because they are wrong anyway.

OpenStudy (3mar):

My result I have gotten is wrong?

OpenStudy (xetsdoittt):

No haha you were right.. never mind lol I'm about to start another thread

OpenStudy (3mar):

Did you get what you were looking for? This is what matters for me!

OpenStudy (3mar):

Thank you for the medal!

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