Question

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

Answer 1

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