Which of the following polynomials has solution that are real numbers?

A) x^2-6x+13

B) x^2+4x+3

C) - x^2-9x-10

D) x^2+2x+3

I think that the only polynomial that has a solution that are real numbers is:

B) x² + 4x + 3 = 0

(x + 3) (x + 1) → x² + 1x + 3x + 3 → x² + 4x + 3

(x+3) = 0 → x = - 3

(x + 1) = 0 → x = - 1

Real numbers are number that are whole numbers, rational and irrational numbers, positive and negative numbers, and even zero.