Use the discriminant to describe the roots of each equation. Then select the best description.x2 - 5x + 7 = 0double rootreal and rational rootsreal and irrational rootsnon-real roots

[tex] \frac{-b+- \sqrt{b^{2} -4ac } }{2a} [/tex]
This is the solution of the equation, where a=1, b=-5, c=7

So the discriminant is : 
b^2-4ac=25-4*7= -3
The square root of -3 is non-real, this both solutions are non-real.