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Simultaneous Settlement (Posted on 2012-01-27) Difficulty: 3 of 5
Without solving for x and y, determine all possible values of x*y in this simultaneous equation:

x+x*y = 8 and, y+x*y = 9

Note: Solving for 1/x, 1/y, -x or -y is similarly NOT allowed.

No Solution Yet Submitted by K Sengupta    
Rating: 5.0000 (1 votes)

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No Subject | Comment 7 of 8 |
x+x*y = 8 and, y+x*y = 9
 
x + x*y + 1 = y + x*y
y = x + 1
x*y = x(x+1) (parabola) 



  Posted by Benny on 2012-01-28 15:35:50
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