Ava45018
Ava45018
30-12-2017
Mathematics
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Help and explain plz
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Hosein
Hosein
30-12-2017
[tex]a {x}^{2} + bx + c \\ \frac{ - b}{2a} = - 2 > > > b = 4a \\ a {x}^{2} + 4ax + c[/tex]
put points in and find a and b easily
[tex]c = 0 \\ 9a - 12a = 3 > > a = - 1[/tex]
[tex] - {x}^{2} - 4x = f(x)[/tex]
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