Question

i need your help again, thank you so much​

Answer 1

$> > > > > > > > > > < < < < < < < < < < \\ first \: question... \\ a = 2 \\ b = - 14 \\ c = - 21 \\ second \: question... \\ a = 2 \\ b = - 8 \\ c = 20 \\ third \: question... \\ a = 2 \\ b = - 6 \\ c = - 15 \\ fourth \: question... \\ a = 1 \\ b = - 3 \\ c = - 5 \\ fifth \: question... \\ a = 1 \\ b = - 10 \\ c = - 12 \\ > > > > > > > > > > < < < < < < < < < < <$

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