(x-4y)(5x-9y) I can not seem to work this out  TOPIC_SOLVED

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(x-4y)(5x-9y) I can not seem to work this out

Postby rainyb on Mon Mar 28, 2011 6:09 am

(x-4y)(5x-9y) I can not seem to work this out can someone help. What dose the y do?
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Re: (x-4y)(5x-9y) I can not seem to work this out

Postby maggiemagnet on Mon Mar 28, 2011 11:06 am

rainyb wrote:(x-4y)(5x-9y) I can not seem to work this out can someone help. What dose the y do?

What is the 'working out' that you need to do? You didn't include the instructions. (If you need to multiply this out, then you can learn how here.)

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Re: (x-4y)(5x-9y) I can not seem to work this out  TOPIC_SOLVED

Postby eoghanflynn on Tue May 17, 2011 9:19 pm

you didnt give us information about what you want to do with this answer. But one thing you could do is split the first bracked (x-4y) on the second bracket (5x-9y). So you would then have x(5x-9y) -4y(5x-9y). then 5x^2-9xy -20xy + 27y^2.
5x^2 - 29xy +27y^2. But this is just one example tell us more.
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