1)4х квадрате+9х+5=0 2)5х квадрате+8х+3=0 помогите плс

[latex]4x^2+9x+5=0[/latex] [latex]D=9^2-4*4*5=81-80= \sqrt{1} = 1[/latex] [latex] x_{1,2} = \frac{-9+-1}{2*4} [/latex] [latex] x_{1}= \frac{-8}{8} = -1 [/latex] [latex] x_{2} = \frac{-10}{8} = -1 \frac{2}{8} = -1 \frac{1}{4} = -1,25[/latex] [latex]5x^2+8x+3=0[/latex] [latex]D=8^2-4*5*3=64-60= \sqrt{4} = 2[/latex] [latex] x_{1,2} = \frac{-8+-2}{2*5} [/latex] [latex] x_{1} = \frac{-6}{10} = -0,6[/latex] [latex] x_{2} = \frac{-10}{10} = -1 [/latex]