Question

obtenha as raízes reais das equações a seguir:
a)

$2x {}^{2} + 1 = 0$

b)

$5x {}^{2} - 125 = 0$
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Answer 1

Boa Tarde !!!

a)
$2x {}^{2} + 1 = 0$
$xe r$
$b)5x {}^{2} - 125 = 0$
$5x {}^{2} = 125$
x1=5

x2=-5