Ответ:
x₁= -4 x₂=3
Пошаговое объяснение:
0\\D=\sqrt{49}=7\\\\x_{1}=\frac{-1-7}{2*1}=\frac{-8}{2}=-4\\\\ x_{2}=\frac{-1+7}{2*1}=\frac{6}{2}=3" alt="x^{2} +x-12=0\\\\D=1^{2}-4*1*(-12)=1+48=49\\ D=49>0\\D=\sqrt{49}=7\\\\x_{1}=\frac{-1-7}{2*1}=\frac{-8}{2}=-4\\\\ x_{2}=\frac{-1+7}{2*1}=\frac{6}{2}=3" align="absmiddle" class="latex-formula">