Posted by **B.B.** on Wednesday, April 21, 2010 at 12:50pm.

Could someone please help me with this problem. I have worked most of it out but now I'm not sure what to do.

Multiply ans simplify.

(x-9/4)(x+4/9)

Here is what I have so far:

x(x+4/9)-9/4(x+4/9)=

x^2+4/9x-9/4x-9/4-4/9=

x^2+4/9x-9/4x-1=

This is where I'm not sure what to do.

Could someone please help?

Thanks.

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