Respostas

2013-10-04T15:44:15-03:00
X² - 16 = 0
x² = 16
x = +- \sqrt{16
}
x = +-4

x = -4 e x = 4
2 5 2
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2013-10-04T15:45:14-03:00
X² - 16 = 0
x² = 16
x =  \sqrt{16}
x = 4
4 5 4