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February 28, 2015

February 28, 2015

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

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.

- Math -
**PsyDAG**, Thursday, April 22, 2010 at 2:36pmFind common denominator to combine terms.

x^2 + 16/36x - 81/36x - 1.

Does that help?

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