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

ANSWERS

2017-08-11 17:03:32

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.

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