1*) Resolva as equações : quais são as raízes dessas equações ?
2 x^2 - 32 = 0
x^2 - 4 x = 0
2 x^2 - x = 0
2 x^2 - 32 = 0
x^2 - 4 x = 0
2 x^2 - x = 0
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2*(x-4)*(x+4)=0
x'=4
x''=-4
x² - 4 x = 0
x*(x-4)=0
x'=0
x''=4
2 x² - x = 0
x*(2x-1)=0
x'=0
x''=1/2