Respostas

2014-06-18T00:45:37-03:00
X = √(2x-1)
x² = 2x - 1
x² - 2x + 1 = 0

bhaskara:
x = 1

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y² = 5
y = √5 
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|x³ . y| = 
|1³.√5| = 
√5
..
A)