Question

find the roots of the quadratic equation x2-x-2=0 please help me​

Answer 1

Step-by-step explanation:

The given equation is,

−x2+x−2=0

The roots of the quadratic equation Ax2+Bx+C=0 are

x=2A−B±B2−4AC

for the given equation, B2−4AC=(1)2−4(−1)(−2)=−7

So, 

x=−2−1±−7

x=21±7i