Questão 1
Resolva as seguintes equações do 2° grau, U=R
a) x² - 49 = 0
b) x ² + 3x = 0
c) 3x² - 27= 0
d) 2x² - 6x = 0
e)x² + 36 =0
f) -x² - x = 0
g) 3x² - 5 = 0
h) 3x² - 3x = 0
i) 3x² - 48 = 0
j) 25x² - 121 = 0
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