If the complex number X equals 3+ bi and x squared equals 13 which is a possible value of B

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0

Which of the following circles have their centers in the third quadrant?

Rewrite the polynomial -9x5 + 36x4 + 189x3 in factored form.