10 lines
256 B
Markdown
10 lines
256 B
Markdown
$a=0 \land b=0 \land c=0 \Rightarrow x \in \mathbb{R}$
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$a=0 \land b=0 \land c \ne 0 \Rightarrow x = \emptyset$
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$a=0 \land b \ne0 \Rightarrow x = \frac {-c}{b}$
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$a \ne 0$
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$\Updelta = b^2 -4ac$
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$ax^2 + bx + c = 0$
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$x \in \mathbb{R} ; a,b,c \in \mathbb{R}$
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