Ask a New Question

The roots of the quadratic equation z^2 + az + b = 0 are 2 - 3i and 2 + 3i. What is a+b?

Can you please help me with this question?

1 answer

well, the equations is

(x-(2-3i))(x-(2+3i)) = 0
((x-2)+3i)((x-2)-3i) = 0
(x-2)^2 + 3^2 = 0
x^2-4x+4 + 9 = 0
x^2-4x+13 = 0

a+b = -4+13 = 9

Similar Questions

SOLVING QUADRATICEQUATIONS 14. Determine the number of real roots, the axis of symmetry, and the vertex of each equation. a. y =
1. 1 answer
I can't seem remember the rules for this.Can someone please help me with the following questions?You can find the roots of a
1. 1 answer
Find the number of integer quadruples (a,b,c,d) with 0\leq a,b,c,d \leq 100, such that a and b are the roots of the quadratic
1. 0 answers
F(x) = ax²+bx+cThe above function, f(x), has a quadratic equation, where a, b, and c are constants. If the sum of the roots is
1. 1 answer

more similar questions