None, it involves the square root of a negative number so the roots are imaginary.
zero
The discriminant is 0.
64
It is: 2x(2x+11)
No integer roots. Quadratic formula gives 1.55 and -0.81 to the nearest hundredth.
4x2-81
(2x - 9)(2x - 9)
It is a polynomial (monomial). It is a polynomial (monomial). It is a polynomial (monomial). It is a polynomial (monomial).
64
True
9. And the word is minus, not minis.
-6. And the word is still minus, not minis.