Question

Решите уравнение :11 + x^2/12 - x - 5/6 = 2

Answer 1

$frac{ 11+x^{2} }{12}*12- frac{x-5}{6}*12= 2*12\\11+ x^{2} -2x+10=24\\ x^{2} -2x-3=0\\D =4-4*(-3)=4+12=16\\X _{1}= frac{2+ sqrt{16} }{2}= frac{2+4}{2}=3\\X _{2}= frac{2- sqrt{16} }{2}= frac{2-4}{2}=-1$