<PRE><B>Question 942965</B>
How would I multiply (5x+4y)(5x-4y)? 
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Check out the distributive law to get the correct answer.
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(5x+4y)(5x-4y) = 5x(5x-4y)+4y(5x-4y)
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= 25x^2 - 20xy + 20xy - 16y^2
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= 25x^2 - 16y^2
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Cheers,
Stan H.
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