ХЕЛП ! ! ! [latex] frac{5 x^{2} +12x-9}{20} [/latex] = 0

[latex] frac{5x^2+12x-9}{20}=0 \ \ 5x^2+12x-9=0 \ x_1=-3 \ x_2= frac{3}{5} [/latex]Ответ: [latex]-3; frac{3}{5} [/latex]

[latex] frac{5 x^{2} +12x-9}{20} =0[/latex][latex] left { {5 x^{2} +12x-9=0} atop {20 eq 0}} ight. [/latex][latex]5 x^{2} +12x-9=0[/latex][latex]D=12^{2} -4*5*(-9)=144+180=324[/latex][latex]x1= frac{-12- sqrt{324} }{5*2}= frac{-12-18}{10}= frac{-30}{10}=-3[/latex][latex]x2= frac{-12+ sqrt{324} }{5*2}= frac{-12+18}{10}= frac{6}{10}=0,6[/latex]Ответ:-3;0,6