[tex]\displaystyle\bf\\\underbrace{9}_{a}x^{2} \underbrace{-3}_{b}x+\underbrace{19}_{c}=0\\\\\\a=9 \ \ , \ \ b=-3 \ \ , \ \ c=19[/tex]
Ответ : 1 - Г
[tex]\displaystyle\bf\\\underbrace{1}_{a}x^{2}+ \underbrace{5}_{b}x\underbrace{-23}_{c}=0\\\\\\a=1 \ \ , \ \ b=5 \ \ , \ \ c=-23[/tex]
Ответ : 2 - A
[tex]\displaystyle\bf\\18+5x^{2} -3x=0\\\\5x^{2} -3x+18=0\\\\\underbrace{5}_{a}x^{2} \underbrace{-3}_{b}x+\underbrace{18}_{c}=0\\\\\\a=5 \ \ , \ \ b=-3 \ \ , \ \ c=18[/tex]
Ответ : 3 - Б
[tex]\displaystyle\bf\\9x+19x^{2} -3=0\\\\19x^{2} +9x-3=0\\\\\underbrace{19}_{a}x^{2}+ \underbrace{9}_{b}x\underbrace{-3}_{c}=0\\\\\\a=19 \ \ , \ \ b=9 \ \ , \ \ c=-3[/tex]
Ответ : 4 - B
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[tex]\displaystyle\bf\\\underbrace{9}_{a}x^{2} \underbrace{-3}_{b}x+\underbrace{19}_{c}=0\\\\\\a=9 \ \ , \ \ b=-3 \ \ , \ \ c=19[/tex]
Ответ : 1 - Г
[tex]\displaystyle\bf\\\underbrace{1}_{a}x^{2}+ \underbrace{5}_{b}x\underbrace{-23}_{c}=0\\\\\\a=1 \ \ , \ \ b=5 \ \ , \ \ c=-23[/tex]
Ответ : 2 - A
[tex]\displaystyle\bf\\18+5x^{2} -3x=0\\\\5x^{2} -3x+18=0\\\\\underbrace{5}_{a}x^{2} \underbrace{-3}_{b}x+\underbrace{18}_{c}=0\\\\\\a=5 \ \ , \ \ b=-3 \ \ , \ \ c=18[/tex]
Ответ : 3 - Б
[tex]\displaystyle\bf\\9x+19x^{2} -3=0\\\\19x^{2} +9x-3=0\\\\\underbrace{19}_{a}x^{2}+ \underbrace{9}_{b}x\underbrace{-3}_{c}=0\\\\\\a=19 \ \ , \ \ b=9 \ \ , \ \ c=-3[/tex]
Ответ : 4 - B