26.032000

multiply  (x+y-3)(x+y+3)=____

mathematics Mathematics 2 3

multiply  (x+y-3)(x+y+3)=____

Posted by mathematics | Posted at Mar 26, 2000 | Categories: Mathematics

Answers

matthew7
matthew7

(x+y-3)(x+y+3) = x^2+xy+3x+xy+y^2+3y-3x-3y-9 = -9+x^2+y^2+2xy

Mar 26, 2000 01:03
yassautumn
yassautumn

[latex](x+y-3)(x+y+3)= (x+y)^2-9= x^2+2xy+y^2-9[/latex]

Mar 26, 2000 01:06

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