What are all of the real roots of the following polynomial? f (x) = x4 - 13x2 + 36

-3, - 2, 2, and 3

-3 and 3

-2 and 2

-3, - 1, 1, and 3

Question

Deegan Greene

2 November, 17:58

+4

Answers (1)

Know the Answer?

Malia Winters · Answer 1

X^4 - 13x^2 + 36 = 0

(x^2 - 9) (x^2 - 4) = 0

x^2 - 9 = 0 gives x = 3, - 3

x^2 - 4 = 0, gives x = 2, - 2.

Answer is A.

What are all of the real roots of the following polynomial? f (x) = x4 - 13x2 + 36-3, - 2, 2, and 3-3 and 3-2 and 2-3, - 1, 1, and 3