Respostas

2014-03-11T10:30:49-03:00
X = 2
X² +3x -10 
3x²-5x-2  = 

2² + 3.2 -10
3.2² - 5.2 -2 =

4 + 6 - 10
3.4 -10 -2 =

10-10
12-10-2=

0



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