QUESTION IMAGE
Question
- resolva as seguintes equações do 2º grau, sendo u = r: (2,25 pts)
resolvido: \\(7x^2 - x = 0 \
ightarrow x(7x - 1) = 0\\)
\\(x = 0\\)
ou
\\(7x - 1 = 0\\)
\\(7x = 1\\)
\\(x = \frac{1}{7}\\)
\\(v = \\{0, \frac{1}{7}\\}
a) \\(x^2 - 7x = 0\\)
c) \\(x^2 + x = 0\\)
Fatorar a equação a)
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Resolver para x na equação a)
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Fatorar a equação c)
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Resolver para x na equação c)
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Question a)
\(V = \{0, 7\}\)
Question c)
\(V = \{-1, 0\}\)