Posted by **Ayushma** on Sunday, September 7, 2008 at 5:01pm.

explain how to compute the xy term of the product (3x-4y)^2?

if possible with solution please.... its urgent

- Math urgent -
**David Q**, Sunday, September 7, 2008 at 5:08pm
(3x-4y)² = (3x-4y)(3x-4y)

To get the xy term, just multiply each term in the first bracket by each term in the second, and add together all the terms in xy that you find. You should get...

9x² - 12xy - 12xy + 16y².

So just add the two xy terms together.

- Math urgent -
**Damon**, Sunday, September 7, 2008 at 5:14pm
You could use FOIL (first, outer,inner last) giving what David Q. said

or

You could use the distributive property

(amounts to the same thing really)

3x(3x-4y) -4y(3x-4y)

that makes it clear that the xy terms ar

-12xy-12xy = -24xy

which we already knew of course.

- Math urgent -
**Ayushma**, Sunday, September 7, 2008 at 5:45pm
thanks so much!!!!!!!!!

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