Question

Решите через дискриминант
Срочно!!!!

Answer 1

$(x-1)^{2}=2x^{2} -6x-31\\\\x^{2}-2x+1=2x^{2} -6x-31\\\\x^{2}-4x-32=0\\\\\frac{D}{4}=(-2)^{2}-(-32)=4+32=36=6^{2} \\\\x_{1}=2-6=-4\\\\x_{2}=2+6=8\\\\Otvet:\boxed{ \ -4 \ ; \ 8}$