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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

User Gamerkore
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1 Answer

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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.
User ABrukish
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