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If x - y = sqrt(3) and x + y = 2, then xy = ?

 Jun 28, 2020
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x = sgrt3+y     sub into second equation

 

sqrt3 +y + y = 2

2y = 2 - sqrt 3

y = 1 - 1/2 sqrt3 

x + 1- 1/2sqrt3  = 2

x = 1 + 1/2 sqrt3

 

You can multiply them for the answer.......

 Jun 28, 2020

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