Question

(х-6)-х(х+8)=2 в расписанном виде

Answer 1

$(x-6)-x*(x+8)=2\\\\x-6-x^{2}-8x-2=0\\\\-x^{2}-7x-8=0\\\\x^{2}+7x+8=0\\\\D=7^{2}-4*1*8=49-32=17\\\\x_{1}=\frac{-7-\sqrt{17}}{2}\\\\x_{2}=\frac{-7+\sqrt{17}}{2}$

ОТВЕТ: ( - 7 ± √17 )/2