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aleksandr82 [10.1K]

2 years ago

9

Mind if I have help once more?

1 answer:

Lina20 [59]2 years ago

6 0

$\bf -2=-x+x^2-4\\\\
\begin{array}{llccll}
0=&1x^2&-1x&-2\\
&\uparrow &\uparrow &\uparrow \\
&a&b&c
\end{array}
\qquad \qquad 
\begin{array}{llll}
\textit{quadratic formula}\\\\
x= \cfrac{ - {{ b}} \pm \sqrt { {{ b}}^2 -4{{ a}}{{ c}}}}{2{{ a}}}
\end{array}$

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