Question

What are the real or imaginary solutions of the polynomial equation?

x^3 = 216



–6, 3 + 3i *square root* 7, and 3-3i *square root* 7

–6, 3 + 3i *square root* 3, and 3-3i *square root* 3

6, 3 + 3i *square root* 7, and 3-3i *square root* 7

6, –3 + 3i *square root* 3, and -3-3i *square root* 3

Answer 1

do you think the real solution is positive or negative?

Answer 2

positive ?

Answer 3

yes

Answer 4

so its C or D

Answer 5

so , it cant be the first two . .

Answer 6

right

Answer 7

c ?

Answer 8

x^3 - 216 = (x - 6)(x^2 +12x + 36) = 0

use the quadratic formula to solve the trinomial to get the 2 complex roots

Answer 9

sorry the factors are
(x - 6)(x^2 +6x + 36) = 0

Answer 10

x = [-b +/- sqrt(b^2 - 4ac)] / 2a