Because every x is 3.
So we can get from Vieta's theorem.
X 1X2=-6
So X2=-6/X 1=-6/3=-2.
That is, the other root of x is -2.
Then x1+x2 =-k.
Equal to 3+(-2)= 1
2. Solution:
Because it comes from Vieta's theorem
X 1+X2=-(4/2)=-2
X 1*X2=M/2
So from the title,
X 1+X2=X 1*X2=-2
That is, M/2=-2
So M = 2 *(2)=-4.